LEVOFLOXACIN 750 MG TABLET | WHITE OBLONG ML 64 MACLEODS PHARMA 3334202332

Fluoroquinolones, including levofloxacin, have been associated with disabling and potentially irreversible serious adverse reactions that have occurred together [see Warnings and Precautions (5.1)], including: o Tendinitis and tendon rupture [see Warnings and Precautions (5.2)] o Peripheral neuropathy [see Warnings and Precautions (5.3)] o Central nervous system effects [see Warnings and Precautions (5.4)] Discontinue levofloxacin immediately and avoid the use of fluoroquinolones, including levofloxacin, in patients who experience any of these serious adverse reactions [see Warnings and Precautions (5.1)] Fluoroquinolones, including levofloxacin, may exacerbate muscle weakness in patients with myasthenia gravis. Avoid levofloxacin in patients with a known history of myasthenia gravis [see Warnings and Precautions (5.5)]. Because fluoroquinolones, including levofloxacin, have been associated with serious adverse reactions [see Warnings and Precautions (5.1-5.15)], reserve levofloxacin for use in patients who have no alternative treatment options for the following indications: o Uncomplicated urinary tract infection [see Indications and Usage (1.12)] o Acute bacterial exacerbation of chronic bronchitis [see Indications and Usage (1.13)] o Acute bacterial sinusitis [see Indications and Usage (1.14)]. WARNING: SERIOUS ADVERSE REACTIONS INCLUDING TENDINITIS, TENDON RUPTURE, PERIPHERAL NEUROPATHY, CENTRAL NERVOUS SYSTEM EFFECTS AND EXACERBATION OF MYASTHENIA GRAVIS See full prescribing information for complete boxed warning. Fluoroquinolones, including levofloxacin, have been associated with disabling and potentially irreversible serious adverse reactions that have occurred together (5.1), including: o Tendinitis and tendon rupture (5.2) o Peripheral neuropathy (5.3) o Central nervous system effects (5.4) Discontinue levofloxacin immediately and avoid the use of fluoroquinolones, including levofloxacin, in patients who experience any of these serious adverse reactions (5.1) Fluoroquinolones, including levofloxacin, may exacerbate muscle weakness in patients with myasthenia gravis. Avoid levofloxacin in patients with a known history of myasthenia gravis [see Warnings and Precautions (5.5)]. Because fluoroquinolones, including levofloxacin, have been associated with serious adverse reactions (5.1-5.15), reserve levofloxacin for use in patients who have no alternative treatment options for the following indications: o Uncomplicated urinary tract infection (1.12) o Acute bacterial exacerbation of chronic bronchitis (1.13) o Acute bacterial sinusitis (1.14)

The usual dose of Levofloxacin Tablets is 250 mg, 500 mg, or 750 mg administered orally every 24 hours, as indicated by infection and described in Table 1. These recommendations apply to patients with creatinine clearance 50 mL/minute. For patients with creatinine clearance less than 50 mL/min, adjustments to the dosing regimen are required [see Dosage and Administration (2.3)]. Table 1: Dosage of Levofloxacin Tablets in Adult Patients with Creatinine Clearance greater than or equal to 50 mL/minute) Type of Infection* Dosed Every 24 hours Duration (days) Nosocomial Pneumonia 750 mg 7 to 14 Community Acquired Pneumonia 500 mg 7 to 14 Community Acquired Pneumonia 750 mg 5 Complicated Skin and Skin Structure Infections (SSSI) 750 mg 7 to 14 Uncomplicated SSSI 500 mg 7 to 10 Chronic Bacterial Prostatitis 500 mg 28 Inhalational Anthrax (Post-Exposure), adult and pediatric patients weighing 50 kg , or greater Pediatric patients weighing 30 kg to less than 50 kg , 500 mg see Table 2 below (2.2) 60 60 Plague, adult and pediatric patients weighing 50 kg or greater Pediatric patients weighing 30 kg to less than 50 kg 500 mg see Table 2 below (2.2) 10 to 14 10 to 14 Complicated Urinary Tract Infection (cUTI) or Acute Pyelonephritis (AP) 750 mg 5 Complicated Urinary Tract Infection (cUTI) or Acute Pyelonephritis (AP)# 250 mg# 10# Uncomplicated Urinary Tract Infection 250 mg 3 Acute Bacterial Exacerbation of Chronic Bronchitis (ABECB) 500 mg 7 Acute Bacterial Sinusitis (ABS) 750 mg 5 500 mg 10 to 14 * Due to the designated pathogens [see Indications and Usage (1)]. Sequential therapy (intravenous levofloxacin to oral levofloxacin tablets) may be instituted at the discretion of the healthcare provider. Due to methicillin-susceptible Staphylococcus aureus, Streptococcus pneumoniae (including multi-drug-resistant isolates [MDRSP]), Haemophilus influenzae, Haemophilus parainfluenzae, Klebsiella pneumoniae, Moraxella catarrhalis, Chlamydophila pneumoniae, Legionella pneumophila, or Mycoplasma pneumoniae [see Indications and Usage (1.2)]. Due to Streptococcus pneumoniae (excluding multi-drug-resistant isolates [MDRSP]), Haemophilus influenzae, Haemophilus parainfluenzae, Mycoplasma pneumoniae, or Chlamydophila pneumoniae [see Indications and Usage (1.3)]. This regimen is indicated for cUTI due to Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis and AP due to E. coli, including cases with concurrent bacteremia. # This regimen is indicated for cUTI due to Enterococcus faecalis, Enterococcus cloacae, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa; and for AP due to E. coli. Drug administration should begin as soon as possible after suspected or confirmed exposure to aerosolized B. anthracis. This indication is based on a surrogate endpoint. Levofloxacin plasma concentrations achieved in humans are reasonably likely to predict clinical benefit [see Clinical Studies (14.9) ]. The safety of levofloxacin tablets in adults for durations of therapy beyond 28 days or in pediatric patients for durations beyond 14 days has not been studied. An increased incidence of musculoskeletal adverse events compared to controls has been observed in pediatric patients [see Warnings and Precautions (5.12), Use in Specific Populations (8.4), and Clinical Studies (14.9)]. Prolonged levofloxacin tablets therapy should only be used when the benefit outweighs the risk. Drug administration should begin as soon as possible after suspected or confirmed exposure to Yersinia pestis. Higher doses of levofloxacin tablets typically used for treatment of pneumonia can be used for treatment of plague, if clinically indicated.

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The data described below reflect exposure to levofloxacin in 7537 patients in 29 pooled Phase 3 clinical trials. The population studied had a mean age of 50 years (approximately 74% of the population was < 65 years of age), 50% were male, 71% were Caucasian, 19% were Black. Patients were treated with levofloxacin for a wide variety of infectious diseases [see Indications and Usage (1)]. Patients received levofloxacin doses of 750 mg once daily, 250 mg once daily, or 500 mg once or twice daily. Treatment duration was usually 3 14 days, and the mean number of days on therapy was 10 days. The overall incidence, type and distribution of adverse reactions was similar in patients receiving levofloxacin doses of 750 mg once daily, 250 mg once daily, and 500 mg once or twice daily. Discontinuation of levofloxacin due to adverse drug reactions occurred in 4.3% of patients overall, 3.8% of patients treated with the 250 mg and 500 mg doses and 5.4% of patients treated with the 750 mg dose. The most common adverse drug reactions leading to discontinuation with the 250 and 500 mg doses were gastrointestinal (1.4%), primarily nausea (0.6%); vomiting (0.4%); dizziness (0.3%); and headache (0.2%). The most common adverse drug reactions leading to discontinuation with the 750 mg dose were gastrointestinal (1.2%), primarily nausea (0.6%), vomiting (0.5%); dizziness (0.3%); and headache (0.3%). Adverse reactions occurring in 1% of levofloxacin -treated patients and less common adverse reactions, occurring in 0.1 to <1% of levofloxacin -treated patients, are shown in Table 4 and Table 5, respectively. The most common adverse drug reactions ( 3%) are nausea, headache, diarrhea, insomnia, constipation, and dizziness. Table 4: Common ( 1%) Adverse Reactions Reported in Clinical Trials with Levofloxacin# System/Organ ClassSystem/Organ Class Adverse ReactionAdverse Reaction % (N=7537)% (N=7537) System/Organ Class Adverse Reaction % (N=7537) Infections and Infestations moniliasis 1 Psychiatric Disorders insomniaN=7274 [see Warnings and Precautions (5.4)] 4 Nervous System Disorders headache dizziness [see Warnings and Precautions (5.4)] 6 3 Respiratory, Thoracic and Mediastinal Disorders dyspnea [see Warnings and Precautions (5.7)] 1 Gastrointestinal Disorders nausea diarrhea constipation abdominal pain vomiting dyspepsia 7 5 3 2 2 2 Skin and Subcutaneous Tissue Disorders rash [see Warnings and Precautions (5.7)] pruritus 2 1 Reproductive System and Breast Disorders Vaginitis 1N=3758 (women) General Disorders and Administration Site Conditions edema injection site reaction chest pain 1 1 1 # pool of studies included IV and oral administration Table 5: Less Common (0.1 to 1%) Adverse Reactions Reported in Clinical Trials with Levofloxacin (N=7537) System/Organ ClassSystem/Organ Class Adverse ReactionAdverse Reaction System/Organ Class Adverse Reaction Infections and Infestations genital moniliasis Blood and Lymphatic System Disorders anemia thrombocytopenia granulocytopenia [see Warnings and Precautions (5.6)] Immune System Disorders allergic reaction [See Warnings and Precautions (5.6,5.7)] Metabolism and Nutrition Disorders hyperglycemia hypoglycemia [see Warnings and Precautions (5.13) ] hyperkalemia Psychiatric Disorders anxiety agitation confusion depression hallucination nightmare [see Warnings and Precautions (5.4) ] sleep disorder anorexia abnormal dreaming Nervous System Disorders tremor convulsions [see Warnings and Precautions (5.4) ] paresthesia [see Warnings and Precautions (5.3 )] vertigo hypertonia hyperkinesias abnormal gait somnolence syncope Respiratory, Thoracic and Mediastinal Disorders epistaxis Cardiac Disorders cardiac arrest palpitation ventricular tachycardia ventricular arrhythmia Vascular Disorders phlebitis Gastrointestinal Disorders gastritis stomatitis pancreatitis esophagitis gastroenteritis glossitis pseudomembraneous/ C. difficile colitis [see Warnings and Precautions (5.10) ] Hepatobiliary Disorders abnormal hepatic function increased hepatic enzymes increased alkaline phosphatase Skin and Subcutaneous Tissue Disorders urticaria [see Warnings and Precautions (5.7) ] Musculoskeletal and Connective Tissue Disorders arthralgia tendinitis [see Warnings and Precautions (5.2) ] myalgia skeletal pain Renal and Urinary Disorders abnormal renal function acute renal failure [see Warnings and Precautions (5.6) ] *N=7274 In clinical trials using multiple-dose therapy, ophthalmologic abnormalities, including cataracts and multiple punctate lenticular opacities, have been noted in patients undergoing treatment with quinolones, including levofloxacin. The relationship of the drugs to these events is not presently established.

Table 6 lists adverse reactions that have been identified during post-approval use of levofloxacin. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Table 6: Postmarketing Reports Of Adverse Drug Reactions System/Organ ClassSystem/Organ Class Adverse ReactionAdverse Reaction System/Organ Class Adverse Reaction Blood and Lymphatic System Disorders pancytopenia aplastic anemia leukopenia hemolytic anemia [see Warnings and Precautions (5.6) ] eosinophilia Immune System Disorders hypersensitivity reactions, sometimes fatal including: anaphylactic/anaphylactoid reactions anaphylactic shock angioneurotic edema serum sickness [see Warnings and Precautions (5.6, 5.7 ) ] Psychiatric Disorders psychosis paranoiaisolated reports of suicidal ideation, suicide attempt and completed suicide [see Warnings and Precautions ( 5.4 ) ] Nervous System Disorders exacerbation of myasthenia gravis [see Warnings and Precautions ( 5.5 ) ] anosmia ageusia parosmia dysgeusia peripheral neuropathy (may be irreversible) [see Warnings and Precautions ( 5.3 ) ] isolated reports of encephalopathy abnormal electroencephalogram (EEG) dysphoniapseudotumor cerebri [see Warnings and Precautions ( 5.4 ) ] Eye Disorders uveitis vision disturbance, including diplopia visual acuity reduced vision blurred scotoma Ear and Labyrinth Disorders hypoacusis tinnitus Cardiac Disorders isolated reports of torsade de pointes electrocardiogram QT prolonged [see Warnings and Precautions ( 5.11 ) ] tachycardia Vascular Disorders vasodilatation Respiratory, Thoracic and Mediastinal Disorders isolated reports of allergic pneumonitis [see Warnings and Precautions ( 5.6 ) ] Hepatobiliary Disorders hepatic failure (including fatal cases) hepatitis jaundice [see Warnings and Precautions 5. 6 , 5.8 ) ] Skin and Subcutaneous Tissue Disorders bullous eruptions to include: Stevens-Johnson Syndrome toxic epidermal necrolysis Acute Generalized Exanthematous Pustulosis (AGEP) fixed drug eruptions erythema multiforme [see Warnings and Precautions ( 5.6 ) ] photosensitivity/phototoxicity reaction [see Warnings and Precautions ( 5.14 ) ] leukocytoclastic vasculitis Musculoskeletal and Connective Tissue Disorders tendon rupture [see Warnings and Precautions ( 5.2 ) ] muscle injury, including rupture rhabdomyolysis Renal and Urinary Disorders interstitial nephritis [see Warnings and Precautions ( 5.6 ) ] General Disorders and Administration Site Conditions multi-organ failure pyrexia Investigations prothrombin time prolonged international normalized ratio prolonged muscle enzymes increased

Risk Summary Published information from case reports, case control studies and observational studies on levofloxacin administered during pregnancy have not identified any drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes. In animal reproduction studies, oral administration of levofloxacin to pregnant rats and rabbits during organogenesis at doses up to 9.4 times and 1.1 times the maximum recommended human dose (MRHD), respectively, did not result in teratogenicity. Fetal toxicity was seen in the rat study, but was absent at doses up to 1.2 times the maximum recommended human dose (see Data). The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risks of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. Data Animal Data Levofloxacin was not teratogenic in an embryofetal development study in rats treated during organogenesis with oral doses as high as 810 mg/kg/day which corresponds to 9.4 times the MRHD (based upon doses normalized for total body surface area). The oral dose of 810 mg/kg/day (high dose) to rats caused decreased fetal body weight and increased fetal mortality that was not seen at the next lower dose (mid-dose, 90 mg/kg/day, equivalent to 1.2 times the MRHD (based upon doses normalized for total body surface area). Maternal toxicity was limited to lower weight gain in the mid and high dose groups. No teratogenicity was observed in an embryofetal development study in rabbits dosed orally during organogenesis with doses as high as 50 mg/kg/day, which corresponds to 1.1 times the MRHD (based upon doses normalized for total body surface area). Maternal toxicity at that dose consisted of lower weight gain and decreased food consumption relative to controls and abortion in four of sixteen dams.

Quinolones, including levofloxacin, cause arthropathy and osteochondrosis in juvenile animals of several species. [see Warnings and Precautions [5.12] and Animal Toxicology and/or Pharmacology (13.2 )] Inhalational Anthrax (Post-Exposure) Levofloxacin is indicated in pediatric patients 6 months of age and older, for inhalational anthrax (post-exposure). The risk-benefit assessment indicates that administration of levofloxacin to pediatric patients is appropriate. The safety of levofloxacin in pediatric patients treated for more than 14 days has not been studied [see Indications and Usage ( 1.7 ), Dosage and Administration ( 2.2 ) andClinical Studies ( 14.9 )]. Plague Levofloxacin is indicated in pediatric patients, 6 months of age and older, for treatment of plague, including pneumonic and septicemic plague due to Yersinia pestis (Y. pestis) and prophylaxis for plague. Efficacy studies of levofloxacin could not be conducted in humans with pneumonic plague for ethical and feasibility reasons. Therefore, approval of this indication was based on an efficacy study conducted in animals. The risk-benefit assessment indicates that administration of levofloxacin to pediatric patients is appropriate [see Indications and Usage ( 1.8 ), Dosage and Administration ( 2.2 ) and Clinical Studies ( 14.10 )]. Safety and effectiveness of levofloxacin tablets in pediatric patients below the age of six months have not been established. Pharmacokinetics following intravenous administration The pharmacokinetics of levofloxacin following a single intravenous dose were investigated in pediatric patients ranging in age from six months to 16 years. Pediatric patients cleared levofloxacin faster than adult patients resulting in lower plasma exposures than adults for a given mg/kg dose [see Clinical Pharmacology ( 12.3 ) and Clinical Studies ( 14.9 )]. Dosage in Pediatric Patients with Inhalational Anthrax or Plague For the recommended levofloxacin tablet dosage in pediatric patients with inhalational anthrax or plague, see Dosage and Administration ( 2.2 ). Levofloxacin Tablets cannot be administered to pediatric patients who weigh less than 30 kg because of the limitations of the available strengths. Alternative formulations of levofloxacin may be considered for pediatric patients who weigh less than 30 kg. Adverse Reactions In clinical trials, 1534 pediatric patients (6 months to 16 years of age) were treated with oral and intravenous levofloxacin. Pediatric patients 6 months to 5 years of age received levofloxacin 10 mg/kg twice a day and pediatric patients greater than 5 years of age received 10 mg/kg once a day (maximum 500 mg per day) for approximately 10 days. Levofloxacin tablets can only be administered to pediatric patients with inhalational anthrax (post-exposure) or plague who are 30 kg or greater due to the limitations of the available strengths [see Dosage and Administration ( 2.2 )]. A subset of pediatric patients in the clinical trials (1340 levofloxacin-treated and 893 non-fluoroquinolone-treated) enrolled in a prospective, long-term surveillance study to assess the incidence of protocol-defined musculoskeletal disorders (arthralgia, arthritis, tendinopathy, gait abnormality) during 60 days and 1 year following the first dose of the study drug. Pediatric patients treated with levofloxacin had a significantly higher incidence of musculoskeletal disorders when compared to the non-fluoroquinolone-treated children as illustrated in Table 7. Levofloxacin tablets can only be administered to pediatric patients with inhalational anthrax (post-exposure) or plague who are 30 kg or greater due to the limitations of the available strengths [see Dosage and Administration ( 2.2 )]. Table 7: Incidence of Musculoskeletal Disorders in Pediatric Clinical Trial Follow-up Period Levofloxacin N = 1340 Non-Fluoroquinolone* N = 893 p-value 60 days 28 (2.1%) 8 (0.9%) p = 0.038 1 year 46 (3.4%) 16 (1.8%) p = 0.025 * Non-Fluoroquinolone: ceftriaxone, amoxicillin/clavulanate, clarithromycin 2-sided Fisher s Exact Test There were 1199 levofloxacin-treated and 804 non-fluoroquinolone-treated pediatric patients who had a one-year evaluation visit. However, the incidence of musculoskeletal disorders was calculated using all reported events during the specified period for all pediatric patients enrolled regardless of whether they completed the 1-year evaluation visit. Arthralgia was the most frequently occurring musculoskeletal disorder in both treatment groups. Most of the musculoskeletal disorders in both groups involved multiple weight-bearing joints. Disorders were moderate in 8/46 (17%) children and mild in 35/46 (76%) levofloxacin-treated pediatric patients and most were treated with analgesics. The median time to resolution was 7 days for levofloxacin -treated pediatric patients and 9 for non-fluoroquinolone-treated children (approximately 80% resolved within 2 months in both groups). No pediatric patient had a severe or serious disorder and all musculoskeletal disorders resolved without sequelae. Vomiting and diarrhea were the most frequently reported adverse reactions, occurring in similar frequency in the levofloxacin -treated and non-fluoroquinolone-treated pediatric patients. In addition to the adverse reactions reported in pediatric patients in clinical trials, adverse reactions reported in adults during clinical trials or post-marketing experience [see Adverse Reactions ( 6 )] may also be expected to occur in pediatric patients.

Geriatric patients are at increased risk for developing severe tendon disorders including tendon rupture when being treated with a fluoroquinolone such as levofloxacin. This risk is further increased in patients receiving concomitant corticosteroid therapy. Tendinitis or tendon rupture can involve the Achilles, hand, shoulder, or other tendon sites and can occur during or after completion of therapy; cases occurring up to several months after fluoroquinolone treatment have been reported. Caution should be used when prescribing levofloxacin to elderly patients especially those on corticosteroids. Patients should be informed of this potential side effect and advised to discontinue levofloxacin and contact their healthcare provider if any symptoms of tendinitis or tendon rupture occur [see Boxed Warning ; Warnings and Precautions ( 5.2 ) ; and Adverse Reactions ( 6.3 ) ]. In phase 3 clinical trials, 1,945 levofloxacin -treated patients (26%) were 65 years of age. Of these, 1,081 patients (14%) were between the ages of 65 and 74 and 864 patients (12%) were 75 years or older. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, but greater sensitivity of some older individuals cannot be ruled out. Severe, and sometimes fatal, cases of hepatotoxicity have been reported post-marketing in association with levofloxacin. The majority of fatal hepatotoxicity reports occurred in patients 65 years of age or older and most were not associated with hypersensitivity. Levofloxacin should be discontinued immediately if the patient develops signs and symptoms of hepatitis [see Warnings and Precautions ( 5.8 ) ]. Epidemiologic studies report an increased rate of aortic aneurysm and dissection within two months following use of fluoroquinolones, particularly in elderly patients. [see Warnings and Precautions ( 5.9 )]. Elderly patients may be more susceptible to drug-associated effects on the QT interval. Therefore, precaution should be taken when using levofloxacin with concomitant drugs that can result in prolongation of the QT interval (e.g., Class IA or Class III antiarrhythmics) or in patients with risk factors for torsade de pointes (e.g., known QT prolongation, uncorrected hypokalemia) [see Warnings and Precautions ( 5.11 ) ]. The pharmacokinetic properties of levofloxacin in younger adults and elderly adults do not differ significantly when creatinine clearance is taken into consideration. However, since the drug is known to be substantially excreted by the kidney, the risk of toxic reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function [see Clinical Pharmacology ( 12.3 )].

Levofloxacin USP are synthetic antibacterial agents for oral administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemical name is (--(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate. Figure 1: The Chemical Structure of Levofloxacin The empirical formula is C18H20FN3O4 H2O and the molecular weight is 370.38. Levofloxacin USP is a light yellowish-white to yellow-white crystal or crystalline powder. The molecule exists as a zwitterion at the pH conditions in the small intestine. The data demonstrate that from pH 0.6 to 5.8, the solubility of levofloxacin, USP is essentially constant (approximately 100 mg/mL). Levofloxacin USP is considered soluble to freely soluble in this pH range, as defined by USP nomenclature. Above pH 5.8, the solubility increases rapidly to its maximum at pH 6.7 (272 mg/mL) and is considered freely soluble in this range. Above pH 6.7, the solubility decreases and reaches a minimum value (about 50 mg/mL) at a pH of approximately 6.9. Levofloxacin USP has the potential to form stable coordination compounds with many metal ions. This in vitro chelation potential has the following formation order: Al +3 >Cu +2 >Zn +2 >Mg +2 >Ca +2 . Levofloxacin USP is available as film-coated tablets and contain the following inactive ingredients: 250 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80 and synthetic red iron oxide. 500 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80 and synthetic red and yellow iron oxides. 750 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80. USP dissolution test 4.

The mean SD pharmacokinetic parameters of levofloxacin determined under single and steady-state conditions following administration of the oral tablets, are summarized in Table 8. Table 8: Mean SD Levofloxacin PK Parameters Regimen Cmax (mcg/mL) Tmax (h) AUC (mcg h/mL) CL/F1 (mL/min) Vd/F2 (L) t 1/2 (h) CLR (mL/ min) Single dose 250 mg oral tablet3 2.8 0.4 1.6 1.0 27.2 3.9 156 20 ND 7.3 0.9 142 21 500 mg oral tablet3* 5.1 0.8 1.3 0.6 47.9 6.8 178 28 ND 6.3 0.6 103 30 750 mg oral tablet4* 9.3 1.6 1.6 0.8 101 20 129 24 83 17 7.5 0.9 ND Multiple dose 500 mg every 24h oral tablet3 5.7 1.4 1.1 0.4 47.5 6.7 175 25 102 22 7.6 1.6 116 31 750 mg every 24h oral tablet4 8.6 1.9 1.4 0.5 90.7 17.6 143 29 100 16 8.8 1.5 116 28 500 mg oral tablet single dose, effects of gender and age: Male5 5.5 1.1 1.2 0.4 54.4 18.9 166 44 89 13 7.5 2.1 126 38 Female6 7.0 1.6 1.7 0.5 67.7 24.2 136 44 62 16 6.1 0.8 106 40 Young7 5.5 1.0 1.5 0.6 47.5 9.8 182 35 83 18 6.0 0.9 140 33 Elderly8 7.0 1.6 1.4 0.5 74.7 23.3 121 33 67 19 7.6 2.0 91 29 500 mg oral single dose tablet, patients with renal impairment: CLCR 50 80 mL/min 7.5 1.8 1.5 0.5 95.6 11.8 88 10 ND 9.1 0.9 57 8 CLCR 20 49 mL/min 7.1 3.1 2.1 1.3 182.1 62.6 51 19 ND 27 10 26 13 CLCR <20 mL/min 8.2 2.6 1.1 1.0 263.5 72.5 33 8 ND 35 5 13 3 Hemodialysis 5.7 1.0 2.8 2.2 ND ND ND 76 42 ND CAPD 6.9 2.3 1.4 1.1 ND ND ND 51 24 ND 1 clearance /bioavailability 2 volume of distribution/bioavailability 3 healthy males 18 53 years of age 4 healthy male and female subjects 18 54 years of age 5 healthy males 22 75 years of age 6 healthy females 18 80 years of age 7young healthy male and female subjects 18 36 years of age 8 healthy elderly male and female subjects 66 80 years of age *Absolute bioavailability; F=0.99 0.08 from a 500 mg tablet and F=0.99 0.06 from a 750 mg tablet; ND=not determined. Levofloxacin pharmacokinetics are linear and predictable after single and multiple oral or IV dosing regimens. Steady-state conditions are reached within 48 hours following a 500 mg or 750 mg once-daily dosage regimen. The mean SD peak and trough plasma concentrations attained following multiple once-daily oral dosage regimens were approximately 5.7 1.4 and 0.5 0.2 mcg/mL after the 500 mg doses, and 8.6 1.9 and 1.1 0.4 mcg/mL after the 750 mg doses, respectively. The mean SD peak and trough plasma concentrations attained following multiple once-daily IV regimens were approximately 6.4 0.8 and 0.6 0.2 mcg/mL after the 500 mg doses, and 12.1 4.1 and 1.3 0.71 mcg/mL after the 750 mg doses, respectively. Absorption Levofloxacin is rapidly and essentially completely absorbed after oral administration. Peak plasma concentrations are usually attained one to two hours after oral dosing. The absolute bioavailability of levofloxacin from a 500 mg tablet and a 750 mg tablet of levofloxacin are both approximately 99%, demonstrating complete oral absorption of levofloxacin. Following a single intravenous dose of levofloxacin to healthy volunteers, the mean SD peak plasma concentration attained was 6.2 1.0 mcg/mL after a 500 mg dose infused over 60 minutes and 11.5 4.0 mcg/mL after a 750 mg dose infused over 90 minutes. Oral administration of a 500 mg dose of levofloxacin with food prolongs the time to peak concentration by approximately 1 hour and decreases the peak concentration by approximately 14% following tablet and approximately 25% following oral solution administration. Therefore, levofloxacin tablets can be administered without regard to food. The plasma concentration profile of levofloxacin after IV administration is similar and comparable in extent of exposure (AUC) to that observed for levofloxacin tablets when equal doses (mg/mg) are administered. Therefore, the oral and IV routes of administration can be considered interchangeable. Distribution The mean volume of distribution of levofloxacin generally ranges from 74 to 112 L after single and multiple 500 mg or 750 mg doses, indicating widespread distribution into body tissues. Levofloxacin reaches its peak levels in skin tissues and in blister fluid of healthy subjects at approximately 3 hours after dosing. The skin tissue biopsy to plasma AUC ratio is approximately 2 and the blister fluid to plasma AUC ratio is approximately 1 following multiple once-daily oral administration of 750 mg and 500 mg doses of levofloxacin, respectively, to healthy subjects. Levofloxacin also penetrates well into lung tissues. Lung tissue concentrations were generally 2- to 5- fold higher than plasma concentrations and ranged from approximately 2.4 to 11.3 mcg/g over a 24-hour period after a single 500 mg oral dose. In vitro, over a clinically relevant range (1 to 10 mcg/mL) of serum/plasma levofloxacin concentrations, levofloxacin is approximately 24 to 38% bound to serum proteins across all species studied, as determined by the equilibrium dialysis method. Levofloxacin is mainly bound to serum albumin in humans. Levofloxacin binding to serum proteins is independent of the drug concentration. Elimination Metabolism Levofloxacin is stereochemically stable in plasma and urine and does not invert metabolically to its enantiomer, D-ofloxacin. Levofloxacin undergoes limited metabolism in humans and is primarily excreted as unchanged drug in the urine. Following oral administration, approximately 87% of an administered dose was recovered as unchanged drug in urine within 48 hours, whereas less than 4% of the dose was recovered in feces in 72 hours. Less than 5% of an administered dose was recovered in the urine as the desmethyl and N-oxide metabolites, the only metabolites identified in humans. These metabolites have little relevant pharmacological activity. Excretion Levofloxacin is excreted largely as unchanged drug in the urine. The mean terminal plasma elimination half-life of levofloxacin ranges from approximately 6 to 8 hours following single or multiple doses of levofloxacin given orally or intravenously. The mean apparent total body clearance and renal clearance range from approximately 144 to 226 mL/min and 96 to 142 mL/min, respectively. Renal clearance in excess of the glomerular filtration rate suggests that tubular secretion of levofloxacin occurs in addition to its glomerular filtration. Concomitant administration of either cimetidine or probenecid results in approximately 24% and 35% reduction in the levofloxacin renal clearance, respectively, indicating that secretion of levofloxacin occurs in the renal proximal tubule. No levofloxacin crystals were found in any of the urine samples freshly collected from subjects receiving levofloxacin. Specific Populations Geriatric Patients There are no significant differences in levofloxacin pharmacokinetics between young and elderly subjects when the subjects' differences in creatinine clearance are taken into consideration. Following a 500 mg oral dose of levofloxacin to healthy elderly subjects (66 80 years of age), the mean terminal plasma elimination half-life of levofloxacin was about 7.6 hours, as compared to approximately 6 hours in younger adults. The difference was attributable to the variation in renal function status of the subjects and was not believed to be clinically significant. Drug absorption appears to be unaffected by age. Levofloxacin dose adjustment based on age alone is not necessary [see Use in Specific Populations (8.5) ]. Pediatric Patients The pharmacokinetics of levofloxacin following a single 7 mg/kg intravenous dose were investigated in pediatric patients ranging in age from 6 months to 16 years. Pediatric patients cleared levofloxacin faster than adult patients, resulting in lower plasma exposures than adults for a given mg/kg dose. Subsequent pharmacokinetic analyses predicted that a dosage regimen of 8 mg/kg every 12 hours (not to exceed 250 mg per dose) for pediatric patients 6 months to 17 years of age would achieve comparable steady state plasma exposures (AUC0-24 and Cmax) to those observed in adult patients administered 500 mg of levofloxacin once every 24 hours. Levofloxacin tablets can only be administered to pediatric patients with inhalational anthrax (post-exposure) or plague who are 30 kg or greater due to the limitations of the available strengths [see Dosage and Administration (2.2 )] Male and Female Subjects There are no significant differences in levofloxacin pharmacokinetics between male and female subjects when subjects' differences in creatinine clearance are taken into consideration. Following a 500 mg oral dose of levofloxacin to healthy male subjects, the mean terminal plasma elimination half-life of levofloxacin was about 7.5 hours, as compared to approximately 6.1 hours in female subjects. This difference was attributable to the variation in renal function status of the male and female subjects and was not believed to be clinically significant. Drug absorption appears to be unaffected by the gender of the subjects. Dose adjustment based on gender alone is not necessary. Racial or Ethnic Groups The effect of race on levofloxacin pharmacokinetics was examined through a covariate analysis performed on data from 72 subjects: 48 white and 24 non-white. The apparent total body clearance and apparent volume of distribution were not affected by the race of the subjects. Patients with Renal Impairment Clearance of levofloxacin is substantially reduced and plasma elimination half-life is substantially prolonged in adult patients with impaired renal function (creatinine clearance< 50 mL/min), requiring dosage adjustment in such patients to avoid accumulation. Neither hemodialysis nor continuous ambulatory peritoneal dialysis (CAPD) is effective in removal of levofloxacin from the body, indicating that supplemental doses of levofloxacin are not required following hemodialysis or CAPD [see Dosage and Administration (2.3) and Use in Specific Populations (8.6) ]. Patients with Hepatic Impairment Pharmacokinetic studies in hepatically impaired patients have not been conducted. Due to the limited extent of levofloxacin metabolism, the pharmacokinetics of levofloxacin are not expected to be affected by hepatic impairment [See Use in Specific Populations (8.7) ] Patients with Bacterial Infection The pharmacokinetics of levofloxacin in patients with serious community-acquired bacterial infections are comparable to those observed in healthy subjects. Drug-Interaction Studies The potential for pharmacokinetic drug interactions between levofloxacin and antacids warfarin, theophylline, cyclosporine, digoxin, probenecid, and cimetidine has been evaluated [see Drug Interactions (7) ].

Mechanism of Action Levofloxacin is the L-isomer of the racemate, ofloxacin, a quinolone antimicrobial agent. The antibacterial activity of ofloxacin resides primarily in the L-isomer. The mechanism of action of levofloxacin and other fluoroquinolone antimicrobials involves inhibition of bacterial topoisomerase IV and DNA gyrase (both of which are type II topoisomerases), enzymes required for DNA replication, transcription, repair and recombination. Resistance Fluoroquinolone resistance can arise through mutations in defined regions of DNA gyrase or topoisomerase IV, termed the Quinolone-Resistance Determining Regions (QRDRs), or through altered efflux. Fluoroquinolones, including levofloxacin, differ in chemical structure and mode of action from aminoglycosides, macrolides and -lactam antibiotics, including penicillins. Fluoroquinolones may, therefore, be active against bacteria resistant to these antimicrobials. Resistance to levofloxacin due to spontaneous mutation in vitro is a rare occurrence (range: 10-9 to 10-10). Cross-resistance has been observed between levofloxacin and some other fluoroquinolones, some microorganisms resistant to other fluoroquinolones may be susceptible to levofloxacin. Antimicrobial Activity Levofloxacin has in vitro activity against Gram-negative and Gram-positive bacteria. Levofloxacin has been shown to be active against most isolates of the following bacteria both in vitro and in clinical infections as described in Indications and Usage (1 ): Aerobic bacteria Gram-Positive Bacteria Enterococcus faecalis Staphylococcus aureus (methicillin-susceptible isolates) Staphylococcus epidermidis (methicillin-susceptible isolates) Staphylococcus saprophyticus Streptococcus pneumoniae (including multi-drug resistant isolates [MDRSP]1) Streptococcus pyogenes 1MDRSP (Multi-drug resistant Streptococcus pneumoniae) isolates are isolates resistant to two or more of the following antibiotics: penicillin (MIC 2 mcg/mL), 2nd generation cephalosporins, e.g., cefuroxime; macrolides, tetracyclines and trimethoprim/sulfamethoxazole. Gram-Negative Bacteria Enterobacter cloacae Escherichia coli Haemophilus influenzae Haemophilus parainfluenzae Klebsiella pneumoniae Legionella pneumophila Moraxella catarrhalis Proteus mirabilis Pseudomonas aeruginosa Serratia marcescens Other microorganisms Chlamydophila pneumoniae Mycoplasma pneumoniae The following in vitro data are available, but their clinical significance is unknown. At least 90 percent of the following bacteria exhibit an in vitro minimum inhibitory concentrations (MIC) less than or equal to the susceptible breakpoint for levofloxacin against isolates of similar genus or organism group. However, efficacy of levofloxacin in treating clinical infections caused by these bacteria has not been established in adequate and well-controlled clinical trials. Aerobic bacteria Gram-Positive Bacteria Staphylococcus haemolyticus -hemolytic Streptococcus (Group C/F) - hemolytic Streptococcus (Group G) Streptococcus agalactiae Streptococcus milleri Viridans group streptococci Bacillus anthracis Gram-Negative Bacteria Acinetobacter baumannii Acinetobacter lwoffii Bordetella pertussis Citrobacter koseri Citrobacter freundii Enterobacter aerogenes Enterobacter sakazakii Klebsiella oxytoca Morganella morganii Pantoea agglomerans Proteus vulgaris Providencia rettgeri Providencia stuartii Pseudomonas fluorescens Yersinia pestis Anaerobic bacteria Gram-Positive Bacteria Clostridium perfringens Susceptibility Tests For specific information regarding susceptibility test interpretive criteria and associated test methods and quality control standards recognized by FDA for this drug, please see: https://www.fda.gov/STIC.

Levofloxacin and other quinolones have been shown to cause arthropathy in immature animals of most species tested [see Warnings and Precautions (5.12)]. In immature dogs (4 5 months old), oral doses of 10 mg/kg/day for 7 days and intravenous doses of 4 mg/kg/day for 14 days of levofloxacin resulted in arthropathic lesions. Administration at oral doses of 300 mg/kg/day for 7 days and intravenous doses of 60 mg/kg/day for 4 weeks produced arthropathy in juvenile rats. Three-month old beagle dogs dosed orally with levofloxacin at 40 mg/kg/day exhibited clinically severe arthrotoxicity resulting in the termination of dosing at Day 8 of a 14-day dosing routine (dosing was terminated in the low and mid-dose groups on Day 9 due to similar findings at the mid-dose). Slight musculoskeletal clinical effects, in the absence of gross pathological or histopathological effects, resulted from the lowest dose level of 2.5 mg/kg/day (approximately 0.2-fold the pediatric dose based upon AUC comparisons). Synovitis and articular cartilage lesions were observed at the 10 and 40 mg/kg dose levels (approximately 0.7-fold and 2.4-fold the pediatric dose, respectively, based on AUC comparisons). Articular cartilage gross pathology and histopathology persisted to the end of the 18-week recovery period for those dogs from the 10 and 40 mg/kg/day dose levels. The low and mid-dose groups in that study were also evaluated by electron microscopy, revealing compound-related ultrastructural effects in articular cartilage chondrocytes at the end of treatment and at the end of recovery in both of those doses. When tested in a mouse ear swelling bioassay, levofloxacin exhibited phototoxicity similar in magnitude to ofloxacin, but less phototoxicity than other quinolones. While crystalluria has been observed in some intravenous rat studies, urinary crystals are not formed in the bladder, being present only after micturition and are not associated with nephrotoxicity. In mice, the CNS stimulatory effect of quinolones is enhanced by concomitant administration of non-steroidal anti-inflammatory drugs. In dogs, levofloxacin administered at 6 mg/kg or higher by rapid intravenous injection produced hypotensive effects. These effects were considered to be related to histamine release. In vitro and in vivo studies in animals indicate that levofloxacin is neither an enzyme inducer nor inhibitor in the human therapeutic plasma concentration range; therefore, no drug metabolizing enzyme-related interactions with other drugs or agents are anticipated.

Adult patients with clinically and radiologically documented nosocomial pneumonia were enrolled in a multicenter, randomized, open-label study comparing intravenous levofloxacin (750 mg once daily) followed by oral levofloxacin (750 mg once daily) for a total of 7 15 days to intravenous imipenem/cilastatin (500 1000 mg every 6 8 hours daily) followed by oral ciprofloxacin (750 mg every 12 hours daily) for a total of 7 15 days. Levofloxacin-treated patients received an average of 7 days of intravenous therapy (range: 1 16 days); comparator-treated patients received an average of 8 days of intravenous therapy (range: 1 19 days). Overall, in the clinically and microbiologically evaluable population, adjunctive therapy was empirically initiated at study entry in 56 of 93 (60.2%) patients in the levofloxacin arm and 53 of 94 (56.4%) patients in the comparator arm. The average duration of adjunctive therapy was 7 days in the levofloxacin arm and 7 days in the comparator. In clinically and microbiologically evaluable patients with documented Pseudomonas aeruginosa infection, 15 of 17 (88.2%) received ceftazidime (N=11) or piperacillin/tazobactam (N=4) in the levofloxacin arm and 16 of 17 (94.1%) received an aminoglycoside in the comparator arm. Overall, in clinically and microbiologically evaluable patients, vancomycin was added to the treatment regimen of 37 of 93 (39.8%) patients in the levofloxacin arm and 28 of 94 (29.8%) patients in the comparator arm for suspected methicillin-resistant S. aureus infection. Clinical success rates in clinically and microbiologically evaluable patients at the post-therapy visit (primary study endpoint assessed on day 3 15 after completing therapy) were 58.1% for levofloxacin and 60.6% for comparator. The 95% CI for the difference of response rates (levofloxacin minus comparator) was [-17.2, 12.0]. The microbiological eradication rates at the posttherapy visit were 66.7% for levofloxacin and 60.6% for comparator. The 95% CI for the difference of eradication rates (levofloxacin minus comparator) was [-8.3, 20.3]. Clinical success and microbiological eradication rates by pathogen are detailed in Table 9. Table 9: Clinical Success Rates and Bacteriological Eradication Rates (Nosocomial Pneumonia) Pathogen N Levofloxacin No. (%) of Patients Microbiologic/Clinical Outcomes N Imipenem/Cilastatin No. (%) of Patients Microbiologic/Clinical Outcomes MSSAMethicillin-susceptible S. aureus 21 14 (66.7)/13 (61.9) 19 13 (68.4)/15(78.9) P. aeruginosa See above text for use of combination therapy 17 10 (58.8)/11 (64.7) 17 5 (29.4)/7 (41.2) S. marcescens 11 9 (81.8)/7 (63.6) 7 2 (28.6)/3 (42.9) E. coli 12 10 (83.3)/7 (58.3) 11 7 (63.6 )/8 (72.7) K. pneumoniae The observed differences in rates for the clinical and microbiological outcomes may reflect other factors that were not accounted for in the study 11 9 (81.8)/5 (45.5) 7 6 (85.7)/3 (42.9) H. influenzae 16 13 (81.3)/10 (62.5) 15 14 (93.3)/11(73.3) S. pneumoniae 4 3 (75.0)/3 (75.0) 7 5 (71.4)/4 (57.1)

Adult inpatients and outpatients with a diagnosis of community-acquired bacterial pneumonia were evaluated in 2 pivotal clinical studies. In the first study, 590 patients were enrolled in a prospective, multi-center, unblinded randomized trial comparing levofloxacin 500 mg once daily orally or intravenously for 7 to 14 days to ceftriaxone 1 to 2 grams intravenously once or in equally divided doses twice daily followed by cefuroxime axetil 500 mg orally twice daily for a total of 7 to 14 days. Patients assigned to treatment with the control regimen were allowed to receive erythromycin (or doxycycline if intolerant of erythromycin) if an infection due to atypical pathogens was suspected or proven. Clinical and microbiologic evaluations were performed during treatment, 5 to 7 days posttherapy, and 3 to 4 weeks posttherapy. Clinical success (cure plus improvement) with levofloxacin at 5 to 7 days posttherapy, the primary efficacy variable in this study, was superior (95%) to the control group (83%). The 95% CI for the difference of response rates (levofloxacin minus comparator) was [-6, 19]. In the second study, 264 patients were enrolled in a prospective, multi-center, non-comparative trial of 500 mg levofloxacin administered orally or intravenously once daily for 7 to 14 days. Clinical success for clinically evaluable patients was 93%. For both studies, the clinical success rate in patients with atypical pneumonia due to Chlamydophila pneumoniae, Mycoplasma pneumoniae, and Legionella pneumophila were 96%, 96%, and 70%, respectively. Microbiologic eradication rates across both studies are presented in Table 10. Table 10: Bacteriological Eradication Rates Across 2 Community Acquired Pneumonia Clinical Studies Pathogen No. Pathogens Bacteriological Eradication Rate (%) H. influenzae 55 98 S. pneumoniae 83 95 S. aureus 17 88 M. catarrhalis 18 94 H. parainfluenzae 19 95 K. pneumoniae 10 100.0 Community-Acquired Pneumonia Due to Multi-Drug Resistant Streptococcus pneumoniae Levofloxacin was effective for the treatment of community-acquired pneumonia caused by multi-drug resistant Streptococcus pneumoniae (MDRSP). MDRSP isolates are isolates resistant to two or more of the following antibacterials: penicillin (MIC 2 mcg/mL), 2nd generation cephalosporins (e.g., cefuroxime, macrolides, tetracyclines and trimethoprim/sulfamethoxazole). Of 40 microbiologically evaluable patients with MDRSP isolates, 38 patients (95.0%) achieved clinical and bacteriologic success at post-therapy. The clinical and bacterial success rates are shown in Table 11.

Levofloxacin is approved for the treatment of acute bacterial sinusitis (ABS) using either 750 mg by mouth 5 days or 500 mg by mouth once daily 10 14 days. To evaluate the safety and efficacy of a high dose short course of levofloxacin, 780 outpatient adults with clinically and radiologically determined acute bacterial sinusitis were evaluated in a double-blind, randomized, prospective, multicenter study comparing levofloxacin 750 mg by mouth once daily for five days to levofloxacin 500 mg by mouth once daily for 10 days. Clinical success rates (defined as complete or partial resolution of the pre-treatment signs and symptoms of ABS to such an extent that no further antibiotic treatment was deemed necessary) in the microbiologically evaluable population were 91.4% (139/152) in the levofloxacin 750 mg group and 88.6% (132/149) in the levofloxacin 500 mg group at the test-of-cure (TOC) visit (95% CI [-4.2, 10.0] for levofloxacin 750 mg minus levofloxacin 500 mg). Rates of clinical success by pathogen in the microbiologically evaluable population who had specimens obtained by antral tap at study entry showed comparable results for the five- and ten-day regimens at the test-of-cure visit 22 days post treatment (see Table 14). Table 14: Clinical Success Rate by Pathogen at the TOC in Microbiologically Evaluable Subjects Who Underwent Antral Puncture (Acute Bacterial Sinusitis) Table 14: Clinical Success Rate by Pathogen at the TOC in Microbiologically Evaluable Subjects Who Underwent Antral Puncture (Acute Bacterial Sinusitis) PathogenPathogen Levofloxacin 750 mg 5 days Levofloxacin 750 mg 5 days Levofloxacin500 mg 10 days Levofloxacin500 mg 10 days Table 14: Clinical Success Rate by Pathogen at the TOC in Microbiologically Evaluable Subjects Who Underwent Antral Puncture (Acute Bacterial Sinusitis) Pathogen Levofloxacin 750 mg 5 days Levofloxacin500 mg 10 days Streptococcus pneumoniaeNote: Forty percent of the subjects in this trial had specimens obtained by sinus endoscopy. The efficacy data for subjects whose specimen was obtained endoscopically were comparable to those presented in the above table. 25/27 (92.6%) 26/27 (96.3%) Haemophilus influenzae 19/21 (90.5%) 25/27 (92.6%) Moraxella catarrhalis 10/11 (90.9%) 13/13 (100%)

Adult patients with a clinical diagnosis of prostatitis and microbiological culture results from urine sample collected after prostatic massage (VB3) or expressed prostatic secretion (EPS) specimens obtained via the Meares-Stamey procedure were enrolled in a multicenter, randomized, double-blind study comparing oral levofloxacin 500 mg, once daily for a total of 28 days to oral ciprofloxacin 500 mg, twice daily for a total of 28 days. The primary efficacy endpoint was microbiologic efficacy in microbiologically evaluable patients. A total of 136 and 125 microbiologically evaluable patients were enrolled in the levofloxacin and ciprofloxacin groups, respectively. The microbiologic eradication rate by patient infection at 5 18 days after completion of therapy was 75.0% in the levofloxacin group and 76.8% in the ciprofloxacin group (95% CI [-12.58, 8.98] for levofloxacin minus ciprofloxacin). The overall eradication rates for pathogens of interest are presented in Table 15. Table 15: Bacteriological Eradication Rates (Chronic Bacterial Prostatitis) Levofloxacin (N=136) Ciprofloxacin (N=125) Pathogen N Eradication N Eradication E. coli 15 14 (93.3%) 11 9 (81.8%) E. faecalis 54 39 (72.2%) 44 33 (75.0%) S. epidermidis Eradication rates shown are for patients who had a sole pathogen only; mixed cultures were excluded. 11 9 (81.8%) 14 11 (78.6%) Eradication rates for S. epidermidis when found with other co-pathogens are consistent with rates seen in pure isolates. Clinical success (cure + improvement with no need for further antibiotic therapy) rates in microbiologically evaluable population 5 18 days after completion of therapy were 75.0% for levofloxacin-treated patients and 72.8% for ciprofloxacin-treated patients (95% CI [-8.87, 13.27] for levofloxacin minus ciprofloxacin). Clinical long-term success (24 45 days after completion of therapy) rates were 66.7% for the levofloxacin-treated patients and 76.9% for the ciprofloxacin-treated patients (95% CI [-23.40, 2.89] for levofloxacin minus ciprofloxacin).

To evaluate the safety and efficacy of the higher dose and shorter course of levofloxacin, 1109 patients with cUTI and AP were enrolled in a randomized, double-blind, multicenter clinical trial conducted in the US from November 2004 to April 2006 comparing levofloxacin 750 mg IV or orally once daily for 5 days (546 patients) with ciprofloxacin 400 mg IV or 500 mg orally twice daily for 10 days (563 patients). Patients with AP complicated by underlying renal diseases or conditions such as complete obstruction, surgery, transplantation, concurrent infection or congenital malformation were excluded. Efficacy was measured by bacteriologic eradication of the baseline organism(s) at the post-therapy visit in patients with a pathogen identified at baseline. The post-therapy (test-of-cure) visit occurred 10 to 14 days after the last active dose of levofloxacin and 5 to 9 days after the last dose of active ciprofloxacin. The bacteriologic cure rates overall for levofloxacin and control at the test-of-cure (TOC) visit for the group of all patients with a documented pathogen at baseline (modified intent to treat or mITT) and the group of patients in the mITT population who closely followed the protocol (Microbiologically Evaluable) are summarized in Table 16. Table 16: Bacteriological Eradication at Test-of-Cure Levofloxacin 750 mg orally or IV once daily for 5 days Ciprofloxacin 400 mg IV/500 mg orally twice daily for 10 days Overall Difference [95% CI] n/N % n/N % Levofloxacin Ciprofloxacin mITT Population* Overall (cUTI or AP) 252/333 75.7 239/318 75.2 0.5 (-6.1, 7.1) cUTI 168/230 73.0 157/213 73.7 AP 84/103 81.6 82/105 78.1 Microbiologically Evaluable Population Overall (cUTI or AP) 228/265 86.0 215/241 89.2 -3.2 [-8.9, 2.5] cUTI 154/185 83.2 144/165 87.3 AP 74/80 92.5 71/76 93.4 * The mITT population included patients who received study medication and who had a positive ( 105 CFU/mL) urine culture with no more than 2 uropathogens at baseline. Patients with missing response were counted as failures in this analysis. The Microbiologically Evaluable population included patients with a confirmed diagnosis of cUTI or AP, a causative organism(s) at baseline present at 105 CFU/mL, a valid test-of-cure urine culture, no pathogen isolated from blood resistant to study drug, no premature discontinuation or loss to follow-up, and compliance with treatment (among other criteria). Microbiologic eradication rates in the Microbiologically Evaluable population at TOC for individual pathogens recovered from patients randomized to levofloxacin treatment are presented in Table 17. Pathogen Bacteriological Eradication Rate (n/N) % Escherichia coli* 155/172 90 Klebsiella pneumoniae 20/23 87 Proteus mirabilis 12/12 100 * The predominant organism isolated from patients with AP was E. coli: 91% (63/69) eradication in AP and 89% (92/103) in patients with cUTI.

The effectiveness of levofloxacin for this indication is based on plasma concentrations achieved in humans, a surrogate endpoint reasonably likely to predict clinical benefit. Levofloxacin has not been tested in humans for the post-exposure prevention of inhalation anthrax. The mean plasma concentrations of levofloxacin associated with a statistically significant improvement in survival over placebo in the rhesus monkey model of inhalational anthrax are reached or exceeded in adult and pediatric patients receiving the recommended oral and intravenous dosage regimens [see Indications and Usage (1.13) and Dosage and Administration (2.1, 2.2)]. Levofloxacin pharmacokinetics have been evaluated in adult and pediatric patients. The mean ( SD) steady state peak plasma concentration in human adults receiving 500 mg orally or intravenously once daily is 5.7 1.4 and 6.4 0.8 mcg/mL, respectively; and the corresponding total plasma exposure (AUC0-24) is 47.5 6.7 and 54.6 11.1 mcg.h/mL, respectively. The predicted steady-state pharmacokinetic parameters in pediatric patients ranging in age from 6 months to 17 years receiving 8 mg/kg orally every 12 hours (not to exceed 250 mg per dose) were calculated to be comparable to those observed in adults receiving 500 mg orally once daily [see Clinical Pharmacology (12.3)]. Levofloxacin tablets can only be administered to pediatric patients with inhalational anthrax (post-exposure) or plague who are 30 kg or greater due to the limitations of the available strengths [see Dosage and Administration ( 2.2 )]. In adults, the safety of levofloxacin for treatment durations of up to 28 days is well characterized. However, information pertaining to extended use at 500 mg daily up to 60 days is limited. Prolonged levofloxacin therapy in adults should only be used when the benefit outweighs the risk. In pediatric patients, the safety of levofloxacin for treatment durations of more than 14 days has not been studied. An increased incidence of musculoskeletal adverse events (arthralgia, arthritis, tendinopathy, gait abnormality) compared to controls has been observed in clinical studies with treatment duration of up to 14 days. Long-term safety data, including effects on cartilage, following the administration of levofloxacin to pediatric patients is limited [see Warnings and Precautions ( 5.12 ) and Use in Specific Populations ( 8.4 )]. A placebo-controlled animal study in rhesus monkeys exposed to an inhaled mean dose of 49 LD50 (~2.7 X 106) spores (range 17 - 118 LD50) of B. anthracis (Ames strain) was conducted. The minimal inhibitory concentration (MIC) of levofloxacin for the anthrax strain used in this study was 0.125 mcg/mL. In the animals studied, mean plasma concentrations of levofloxacin achieved at expected Tmax (1 hour post dose) following oral dosing to steady state ranged from 2.79 to 4.87 mcg/mL. Steady state trough concentrations at 24 hours post-dose ranged from 0.107 to 0.164 mcg/mL. Mean (SD) steady state AUC0-24 was 33.4 3.2 mcg.h/mL (range 30.4 to 36.0 mcg.h/mL). Mortality due to anthrax for animals that received a 30 day regimen of oral levofloxacin beginning 24 hrs post exposure was significantly lower (1/10), compared to the placebo group (9/10) [P=0.0011, 2-sided Fisher's Exact Test]. The one levofloxacin treated animal that died of anthrax did so following the 30-day drug administration period.

Efficacy studies of levofloxacin could not be conducted in humans with pneumonic plague for ethical and feasibility reasons. Therefore, approval of this indication was based on an efficacy study conducted in animals. The mean plasma concentrations of levofloxacin associated with a statistically significant improvement in survival over placebo in an African green monkey model of pneumonic plague are reached or exceeded in adult and pediatric patients receiving the recommended oral and intravenous dosage regimens [see Indications and Usage (1.14) and Dosage and Administration (2.1), (2.2)] . Levofloxacin pharmacokinetics have been evaluated in adult and pediatric patients. The mean ( SD) steady state peak plasma concentration in human adults receiving 500 mg orally or intravenously once daily is 5.7 1.4 and 6.4 0.8 mcg/mL, respectively; and the corresponding total plasma exposure (AUC0-24) is 47.5 6.7 and 54.6 11.1 mcg.h/mL, respectively. The predicted steady-state pharmacokinetic parameters in pediatric patients ranging in age from 6 months to 17 years receiving 8 mg/kg orally every 12 hours (not to exceed 250 mg per dose) were calculated to be comparable to those observed in adults receiving 500 mg orally once daily [see Clinical Pharmacology (12.3)]. Levofloxacin Tablets can only be administered to pediatric patients with inhalational anthrax (post-exposure) or plague who are 30 kg or greater due to the limitations of the available strengths [see Dosage and Administration ( 2.2) ]. A placebo-controlled animal study in African green monkeys exposed to an inhaled mean dose of 65 LD50 (range 3 to 145 LD50) of Yersinia pestis (CO92 strain) was conducted. The minimal inhibitory concentration (MIC) of levofloxacin for the Y. pestis strain used in this study was 0.03 mcg/mL. Mean plasma concentrations of levofloxacin achieved at the end of a single 30-min infusion ranged from 2.84 to 3.50 mcg/mL in African green monkeys. Trough concentrations at 24 hours post-dose ranged from <0.03 to 0.06 mcg/mL. Mean (SD) AUC0-24 was 11.9 (3.1) mcg.h/mL (range 9.50 to 16.86 mcg.h/mL). Animals were randomized to receive either a 10-day regimen of i.v. levofloxacin or placebo beginning within 6 hrs of the onset of telemetered fever ( 39oC for more than 1 hour). Mortality in the levofloxacin group was significantly lower (1/17) compared to the placebo group (7/7) [p<0.001, Fisher's Exact Test; exact 95% confidence interval (-99.9%, -55.5%) for the difference in mortality]. One levofloxacin-treated animal was euthanized on Day 9 post-exposure to Y. pestis due to a gastric complication; it had a blood culture positive for Y. pestis on Day 3 and all subsequent daily blood cultures from Day 4 through Day 7 were negative.

Advise the patient to read the FDA-approved patient labeling (Medication Guide). Serious Adverse Reactions Advise patients to stop taking levofloxacin tablets if they experience an adverse reaction and to call their healthcare provider for advice on completing the full course of treatment with another antibacterial drug. Inform patients of the following serious adverse reactions that have been associated with levofloxacin tablets or other fluoroquinolone use: Disabling and Potentially Irreversible Serious Adverse Reactions That May Occur Together: Inform patients that disabling and potentially irreversible serious adverse reactions, including tendinitis and tendon rupture, peripheral neuropathies, and central nervous system effects, have been associated with use of levofloxacin tablets and may occur together in the same patient. Inform patients to stop taking levofloxacin tablets immediately if they experience an adverse reaction and to call their healthcare provider. Tendinitis and Tendon Rupture: Instruct patients to contact their healthcare provider if they experience pain, swelling, or inflammation of a tendon, or weakness or inability to use one of their joints; rest and refrain from exercise; and discontinue levofloxacin tablets treatment. Symptoms may be irreversible. The risk of severe tendon disorder with fluoroquinolones is higher in older patients usually over 60 years of age, in patients taking corticosteroid drugs, and in patients with kidney, heart or lung transplants. Peripheral Neuropathies: Inform patients that peripheral neuropathies have been associated with levofloxacin use, symptoms may occur soon after initiation of therapy and may be irreversible. If symptoms of peripheral neuropathy including pain, burning, tingling, numbness and/or weakness develop, immediately discontinue levofloxacin tablets and tell them to contact their physician. Central Nervous System Effects (for example, convulsions, dizziness, lightheadedness, increased intracranial pressure): Inform patients that convulsions have been reported in patients receiving fluoroquinolones, including levofloxacin. Instruct patients to notify their physician before taking this drug if they have a history of convulsions. Inform patients that they should know how they react to levofloxacin tablets before they operate an automobile or machinery or engage in other activities requiring mental alertness and coordination. Instruct patients to notify their physician if persistent headache with or without blurred vision occurs. Exacerbation of Myasthenia Gravis: Instruct patients to inform their physician of any history of myasthenia gravis. Instruct patients to notify their physician if they experience any symptoms of muscle weakness, including respiratory difficulties. Hypersensitivity Reactions: Inform patients that levofloxacin can cause hypersensitivity reactions, even following a single dose, and to discontinue the drug at the first sign of a skin rash, hives or other skin reactions, a rapid heartbeat, difficulty in swallowing or breathing, any swelling suggesting angioedema (for example, swelling of the lips, tongue, face, tightness of the throat, hoarseness), or other symptoms of an allergic reaction. Hepatotoxicity: Inform patients that severe hepatotoxicity (including acute hepatitis and fatal events) has been reported in patients taking levofloxacin tablets. Instruct patients to inform their physician if they experience any signs or symptoms of liver injury including: loss of appetite, nausea, vomiting, fever, weakness, tiredness, right upper quadrant tenderness, itching, yellowing of the skin and eyes, light colored bowel movements or dark colored urine. Aortic aneurysm and dissection: Inform patients to seek emergency medical care if they experience sudden chest, stomach, or back pain. Diarrhea: Diarrhea is a common problem caused by antibiotics which usually ends when the antibiotic is discontinued. Sometimes after starting treatment with antibiotics, patients can develop watery and bloody stools (with or without stomach cramps and fever) even as late as two or more months after having taken the last dose of the antibiotic. If this occurs, instruct patients to contact their physician as soon as possible. Prolongation of the QT Interval: Instruct patients to inform their physician of any personal or family history of QT prolongation or proarrhythmic conditions such as hypokalemia, bradycardia, or recent myocardial ischemia; if they are taking any Class IA (quinidine, procainamide), or Class III (amiodarone, sotalol) antiarrhythmic agents. Instruct patients to notify their physician if they have any symptoms of prolongation of the QT interval, including prolonged heart palpitations or a loss of consciousness. Musculoskeletal Disorders in Pediatric Patients: Instruct parents to inform their child s physician if the child has a history of joint-related problems before taking this drug. Inform parents of pediatric patients to notify their child s physician of any joint-related problems that occur during or following levofloxacin therapy [see Warnings and Precautions (5.12) and Use in Specific Populations (8.4)]. Photosensitivity/Phototoxicity: Inform patients that photosensitivity/phototoxicity has been reported in patients receiving fluoroquinolones. Inform patients to minimize or avoid exposure to natural or artificial sunlight (tanning beds or UVA/B treatment) while taking fluoroquinolones. If patients need to be outdoors while using fluoroquinolones, instruct them to wear loose-fitting clothes that protect skin from sun exposure and discuss other sun protection measures with their physician. If a sunburn-like reaction or skin eruption occurs, instruct patients to contact their physician. Lactation: Advise a lactating woman that she may pump and discard during treatment with levofloxacin and for an additional 2 days after the last dose. Alternatively, advise a lactating woman that breastfeeding is not recommended during treatment with levofloxacin and for an additional 2 days after the last dose [see Use in Specific Populations (8.2) ]. Antibacterial Resistance Antibacterial drugs including levofloxacin should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When levofloxacin is prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed. Skipping doses or not completing the full course of therapy may (1) decrease the effectiveness of the immediate treatment and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by levofloxacin or other antibacterial drugs in the future. Administration with Food, Fluids, and Concomitant Medications Patients should be informed that levofloxacin tablets may be taken with or without food. The tablets should be taken at the same time each day. Patients should drink fluids liberally while taking levofloxacin tabletsto avoid formation of a highly concentrated urine and crystal formation in the urine. Antacids containing magnesium, or aluminum, as well as sucralfate, metal cations such as iron, and multivitamin preparations with zinc or didanosine should be taken at least two hours before or two hours after oral levofloxacin administration Drug Interactions with Insulin, Oral Hypoglycemic Agents, and Warfarin Patients should be informed that if they are diabetic and are being treated with insulin or an oral hypoglycemic agent and a hypoglycemic reaction occurs, they should discontinue levofloxacin tablets and consult a physician. Patients should be informed that concurrent administration of warfarin and levofloxacin tablets has been associated with increases of the International Normalized Ratio (INR) or prothrombin time and clinical episodes of bleeding. Patients should notify their physician if they are taking warfarin, be monitored for evidence of bleeding, and also have their anticoagulation tests closely monitored while taking warfarin concomitantly. Plague and Anthrax Studies Patients given levofloxacin tablets for these conditions should be informed that efficacy studies could not be conducted in humans for ethical and feasibility reasons. Therefore, approval for these conditions was based on efficacy studies conducted in animals. Manufactured for: Macleods Pharma USA, Inc., Princeton, NJ 08540 Manufactured by: Macleods Pharmaceutical Ltd. Baddi, Himachal Pradesh, India. Medication Guide available at:www.macleodspharma.com/usa Revised :01/2023

Medication GuideLevofloxacin Tablets (LEE-voe-FLOX-a-sin) What is the most important information I should know about levofloxacin tablets? Levofloxacin tablets, a fluoroquinolone antibiotic, can cause serious side effects. Some of these serious side effects can happen at the same time and could result in death. If you have any of the following serious side effects while you take levofloxacin tablets, you should stop taking levofloxacin tablets immediately and get medical help right away. 1. Tendon rupture or swelling of the tendon (tendinitis). Tendon problems can happen in people of all ages who take levofloxacin tablets. Tendons are tough cords of tissue that connect muscles to bones. Some tendon problems include: pain swelling tears and swelling of tendons including the back of the ankle (Achilles), shoulder, hand, or other tendon sites. The risk of getting tendon problems while you take levofloxacin tablets is higher if you: are over 60 years of age are taking steroids (corticosteroids) have had a kidney, heart or lung transplant. Tendon problems can happen in people who do not have the above risk factors when they take levofloxacin tablets. Other reasons that can increase your risk of tendon problems can include: physical activity or exercise kidney failure tendon problems in the past, such as in people with rheumatoid arthritis (RA) Stop taking levofloxacin tablets immediately and get medical help right away at the first sign of tendon pain, swelling or inflammation. Avoid exercise and using the affected area. The most common area of pain and swelling is the Achilles tendon at the back of your ankle. This can also happen with other tendons. You may need a different antibiotic that is not a fluoroquinolone to treat your infection. Tendon rupture can happen while you are taking or after you have finished taking levofloxacin tablets. Tendon ruptures can happen within hours or days of taking levofloxacin tablets and have happened up to several months after people have finished taking their fluoroquinolone. Stop taking levofloxacin tablets immediately and get medical help right away if you get any of the following signs or symptoms of a tendon rupture: hear or feel a snap or pop in a tendon area bruising right after an injury in a tendon area unable to move the affected area or bear weight The tendon problems may be permanent. 2. Changes in sensation and possible nerve damage (Peripheral Neuropathy). Damage to the nerves in arms, hands, legs, or feet can happen in people who take fluoroquinolones, including levofloxacin tablets. Stop taking levofloxacin tablets immediately and talk to your healthcare provider right away if you get any of the following symptoms of peripheral neuropathy in your arms, hands, legs, or feet: pain numbness burning weakness tingling The nerve damage may be permanent 3. Central Nervous System (CNS) effects. Mental health problems and seizures have been reported in people who take fluoroquinolone antibacterial medicines, including levofloxacin tablets. Tell your healthcare provider if you have a history of mental health problems, including depression, or have a history of seizures before you start taking levofloxacin tablets. CNS side effects may happen as soon as after taking the first dose of levofloxacin tablets. Stop taking levofloxacin tablets immediately and talk to your healthcare provider right away if you get any of these side effects, or other changes in mood or behavior: seizures nightmares hear voices, see things, or sense things that are not there(hallucinations) feel lightheaded or dizzy feel more suspicious (paranoia) tremors suicidal thoughts or acts feel anxious or nervous headaches that will not go away, with or without blurred vision confusion memory problems depression false or strange thoughts or beliefs (delusion) reduced awareness of surroundings trouble sleeping The CNS changes may be permanent. 4. Worsening of myasthenia gravis (a problem that causes muscle weakness). Fluoroquinolones like levofloxacin tablets may cause worsening of myasthenia gravis symptoms, including muscle weakness and breathing problems. Tell your healthcare provider if you have a history of myasthenia gravis before you start taking levofloxacin tablets. Call your healthcare provider right away if you have any worsening muscle weakness or breathing problems. What are levofloxacin tablets? Levofloxacin tablets are a fluoroquinolone antibiotic medicine used in adults age 18 years or older to treat certain infections caused by certain germs called bacteria. These bacterial infections include: nosocomial pneumonia plague community acquired pneumonia urinary tract infections, complicated and uncomplicated skin infections, complicated and uncomplicated acute kidney infection (pyelonephritis) chronic prostate infection acute sinus infection inhalation anthrax germs acute worsening or chronic bronchitis Studies of levofloxacin tablets for use in the treatment of plague and anthrax were done in animals only, because plague and anthrax could not be studied in people. Levofloxacin tablets should not be used in people with uncomplicated urinary tract infections, acute bacterial exacerbation of chronic bronchitis, or acute bacterial sinusitis if there are other treatment options available. Levofloxacin is also used to treat children who weigh at least 66 pounds (or at least 30 kilograms) and may have breathed in anthrax germs, have plague, or been exposed to plague germs. It is not known if levofloxacin tablets are safe and effective in children under 6 months of age. The safety and effectiveness in children treated with levofloxacin tablets for more than 14 days is not known. Who should not take levofloxacin tablets? Do not take levofloxacin tablets if you have ever had a severe allergic reaction to an antibiotic known as a fluoroquinolone, or if you are allergic to levofloxacin or any of the ingredients in levofloxacin tablets. See the end of this leaflet for a complete list of ingredients in levofloxacin tablets. Before you take levofloxacin tablets, tell your healthcare provider about all of your medical conditions, including if you: have tendon problems. Levofloxacin tablets should not be used in people who have a history of tendon problems. have a problem that causes muscle weakness (myasthenia gravis). Levofloxacin tablets should not be used in people who have a known history of myasthenia gravis. have a history of mental health problems, including depression. have central nervous system problems such as seizures (epilepsy). have nerve problems. Levofloxacin should not be used in people who have a history of a nerve problem called peripheral neuropathy. have or anyone in your family has an irregular heartbeat, especially a condition called QT prolongation . have low blood potassium (hypokalemia). have bone problems. have joint problems including rheumatoid arthritis (RA). have kidney problems. You may need a lower dose of levofloxacin tablets if your kidneys do not work well. have liver problems. have diabetes or problems with low blood sugar (hypoglycemia). are pregnant or plan to become pregnant. Levofloxacin tablets will harm your unborn child. are breastfeeding or plan to breastfeed. Levofloxacin passes into your breast milk. You should not breastfeed during treatment with levofloxacin and for 2 days after taking your last dose of levofloxacin. You may pump your breast milk and throw it away during treatment with levofloxacin and for 2 days after taking your last dose of levofloxacin. If you are taking levofloxacin for inhalational anthrax, you and your healthcare provider should decide whether you can continue breastfeeding while taking levofloxacin. Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Levofloxacin tablets and other medicines can affect each other causing side effects. Especially tell your healthcare provider if you take: a steroid medicine. an anti-psychotic medicine a tricyclic antidepressant a water pill (diuretic) certain medicines may keep levofloxacin tablets from working correctly. Take levofloxacin tablets either 2 hours before or 2 hours after taking these medicines or supplements: o an antacid, multivitamin, or other medicines or supplements that have magnesium, aluminum, iron, or zinc o sucralfate (Carafate ) o didanosine (Videx ,Videx EC) a blood thinner (warfarin, Coumadin, Jantoven). an oral anti-diabetes medicine or insulin. an NSAID (Non-Steroidal Anti-Inflammatory Drug). Many common medicines for pain relief are NSAIDs. Taking an NSAID while you take levofloxacin tablets or other fluoroquinolones may increase your risk of central nervous system effects and seizures. theophylline (Theo-24 , Elixophyllin , Theochron , Uniphyl , Theolair ). a medicine to control your heart rate or rhythm (antiarrhythmics). Ask your healthcare provider if you are not sure if any of your medicines are listed above. Know the medicines you take. Keep a list of your medicines and show it to your healthcare provider and pharmacist when you get a new medicine. How should I take levofloxacin tablets? Take levofloxacin exactly as your healthcare provider tells you to take it. Take levofloxacin at the same time each day. Drink plenty of fluids while you take levofloxacin. Levofloxacin can be taken with or without food. If you miss a dose of levofloxacin tablets and it is: o 8 hours or more until your next scheduled dose, take your missed dose right away. Then take the next dose at your regular time. o less than 8 hours until your next scheduled dose, do not take the missed dose. Take the next dose at your regular time. Do not skip any doses of levofloxacin or stop taking it, even if you begin to feel better, until you finish your prescribed treatment unless: o you have tendon problems. See What is the most important information I should know about levofloxacin ? . o you have a nerve problem. See What is the most important information I should know about levofloxacin ? . o you have a central nervous system problem. See What is the most important information I should know about levofloxacin ? . o you have a serious allergic reaction. See What are the possible side effects of levofloxacin ? . o your healthcare provider tells you to stop taking levofloxacin Taking all of your levofloxacin tablets doses will help make sure that all of the bacteria are killed. Taking all of your levofloxacin tablets doses will help you lower the chance that the bacteria will become resistant to levofloxacin tablets. If your infection does not get better while you take levofloxacin tablets, it may mean that the bacteria causing your infection may be resistant to levofloxacin tablets. If your infection does not get better, call your healthcare provider. If your infection does not get better, levofloxacin tablets and other similar antibiotic medicines may not work for you in the future. If you take too much levofloxacin tablets, call your healthcare provider or get medical help right away. What should I avoid while taking levofloxacin tablets? Levofloxacin tablets can make you feel dizzy and lightheaded. Do not drive, operate machinery, or do other activities that require mental alertness or coordination until you know how levofloxacin tablets affects you. Avoid sunlamps, tanning beds, and try to limit your time in the sun. Levofloxacin tablets can make your skin sensitive to the sun (photosensitivity) and the light from sunlamps and tanning beds. You could get severe sunburn, blisters or swelling of your skin. If you get any of these symptoms while you take levofloxacin tablets, call your healthcare provider right away. You should use sunscreen and wear a hat and clothes that cover your skin if you have to be in sunlight. What are the possible side effects of levofloxacin tablets? Levofloxacin tablets may cause serious side effects, including: See What is the most important information I should know about levofloxacin tablets? Serious allergic reactions. Allergic reactions can happen in people taking fluoroquinolones, including levofloxacin tablets, even after only 1 dose. Stop taking levofloxacin tablets and get emergency medical help right away if you have any of the following symptoms of a severe allergic reaction: o hives o rapid heartbeat o trouble breathing or swallowing o faint o swelling of the lips, tongue, face o skin rash o throat tightness, hoarseness Skin rash may happen in people taking levofloxacin tablets, even after only 1 dose. Stop taking levofloxacin tablets at the first sign of a skin rash and immediately call your healthcare provider. Skin rash may be a sign of a more serious reaction to levofloxacin tablets. Liver damage (hepatotoxicity): Hepatotoxicity can happen in people who take levofloxacin tablets. Call your healthcare provider right away if you have unexplained symptoms such as: o nausea or vomiting o unusual tiredness o stomach pain o loss of appetite o fever o light colored bowel movements o weakness o dark colored urine o pain or tenderness in the upper right side of your stomach-area o yellowing of your skin or the whites of your eyes o itching Stop taking levofloxacin tablets and tell your healthcare provider right away if you have yellowing of your skin or white part of your eyes, or if you have dark urine. These can be signs of a serious reaction to levofloxacin tablets (a liver problem). Aortic aneurysm and dissection Tell your healthcare provider if you have ever been told that you have an aortic aneurysm, a swelling of the large artery that carries blood from the heart to the body. Get emergency medical help right away if you have sudden chest, stomach, or back pain. Intestine infection (Clostridium difficile-associated diarrhea). Clostridium difficile-associated diarrhea (CDAD) can happen with many antibiotics, including levofloxacin. Call your healthcare provider right away if you get watery diarrhea, diarrhea that does not go away, or bloody stools. You may have stomach cramps and a fever. CDAD can happen 2 or more months after you have finished your antibiotic. Serious heart rhythm changes (QT prolongation and torsades de pointes) Tell your healthcare provider right away if you have a change in your heart beat (a fast or irregular heartbeat), or if you faint. Levofloxacin tablets may cause a rare heart problem known as prolongation of the QT interval. This condition can cause an abnormal heartbeat and can be very dangerous. The chances of this happening are higher in people: o who are elderly o with a family history of prolonged QT interval o with low blood potassium (hypokalemia) o who take certain medicines to control heart rhythm (antiarrhythmics) Joint Problems Increased chance of problems with joints and tissues around joints in children can happen. Tell your child s healthcare provider if your child has any joint problems during or after treatment with levofloxacin tablets. Changes in blood sugar People who take levofloxacin tablets and other fluoroquinolone medicines with oral anti-diabetes medicines or with insulin can get low blood sugar (hypoglycemia) and high blood sugar (hyperglycemia). Follow your healthcare provider s instructions for how often to check your blood sugar. If you have diabetes and you get low blood sugar while taking levofloxacin tablets, stop taking levofloxacin tablets and call your healthcare provider right away. Your antibiotic medicine may need to be changed. Sensitivity to sunlight (photosensitivity) See What should I avoid while taking levofloxacin tablets? The most common side effects of levofloxacin tablets include: o nausea o insomnia o headache o constipation o diarrhea o dizziness In children 6 months and older who take levofloxacin to treat anthrax disease or plague, vomiting is also common. Levofloxacin tablets may cause false-positive urine screening results for opiates when testing is done with some commercially available kits. A positive result should be confirmed using a more specific test. These are not all the possible side effects of levofloxacin tablets. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 How should I store levofloxacin tablets? Store levofloxacin tablets at room temperature between 59 F to 86 F (15 C to 30 C). Keep levofloxacin tablets in a tightly closed container. General information about the safe and effective use of levofloxacin tablets Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use levofloxacin tablets for a condition for which it is not prescribed. Do not give levofloxacin tablets to other people, even if they have the same symptoms that you have. It may harm them. This Medication Guide summarizes the most important information about levofloxacin tablets. If you would like more information about levofloxacin tablets, talk with your healthcare provider. You can ask your healthcare provider or pharmacist for information about levofloxacin tablets that is written for health professionals. For more information, call 1-888-943-3210 or 1-855-926-3384 What are the ingredients in levofloxacin tablets? Active ingredient: levofloxacin. All Levofloxacin tablets: Inactive ingredients: hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80. Levofloxacin tablets 250 mg also contain synthetic red iron oxide, levofloxacin tablets 500 mg also contain synthetic red and yellow iron oxides. The brands listed are trademarks of their respective owners. Manufactured for: Macleods Pharma USA, Inc., Princeton, NJ 08540 Manufactured by: Macleods Pharmaceutical Ltd. Baddi, Himachal Pradesh, India. This Medication Guide has been approved by the U.S. Food and Drug Administration. Medication Guide available at:www.macleodspharma.com/usa Revised: January 2023

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