Levofloxacindrug info

levofloxacin 25 MG/ML Oral Solution

What it is used for

Levofloxacin oral solution is indicated for the treatment of adults (≥18 years of age) with mild, moderate, and severe infections caused by susceptible isolates of the designated microorganisms in the conditions listed in this section. Levofloxacin is a fluoroquinolone antibacterial indicated in adults (≥18 years of age) with infections caused by designated, susceptible bacteria.

Pneumonia: Nosocomial and Community Acquired Skin and Skin Structure Infections: Complicated and Uncomplicated Chronic bacterial prostatitis Inhalational Anthrax, Post-Exposure Plague Urinary Tract Infections: Complicated and Uncomplicated Acute Pyelonephritis Acute Bacterial Exacerbation of Chronic Bronchitis Acute Bacterial Sinusitis Usage To reduce the development of drug-resistant bacteria and maintain the effectiveness of levofloxacin and other antibacterial drugs, levofloxacin should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.

1.1 Nosocomial

Pneumonia Levofloxacin is indicated for the treatment of nosocomial pneumonia due to methicillin-susceptible Staphylococcus aureus, Pseudomonas aeruginosa, Serratia marcescens, Escherichia coli, Klebsiella pneumoniae, Haemophilus influenzae, or Streptococcus pneumoniae. Adjunctive therapy should be used as clinically indicated. Where Pseudomonas aeruginosa is a documented or presumptive pathogen, combination therapy with an anti-pseudomonal β-lactam is recommended.

1.2 Community-Acquired

Pneumonia: 7-14 day Treatment Regimen Levofloxacin is indicated for the treatment of community-acquired pneumonia due to methicillin-susceptible S taphylococcus aureus, Streptococcus pneumoniae (including multi- drug-resistant Streptococcus pneumoniae [MDRSP]), Haemophilus influenzae, Haemophilus parainfluenzae, Klebsiella pneumoniae, Moraxella catarrhalis, Chlamydophila pneumoniae, Legionella pneumophila, or Mycoplasma pneumoniae. MDRSP isolates are isolates resistant to two or more of the following antibacterials: penicillin (MIC ≥2 mcg/mL), 2 nd generation cephalosporins, e.g., cefuroxime, macrolides, tetracyclines and trimethoprim/sulfamethoxazole.

1.3 Community-Acquired

Pneumonia: 5-day Treatment Regimen Levofloxacin is indicated for the treatment of community-acquired pneumonia due to Streptococcus pneumoniae (excluding multi-drug-resistant isolates [MDRSP]), Haemophilus influenzae, Haemophilus parainfluenzae, Mycoplasma pneumoniae, or Chlamydophila pneumoniae.

1.4 Complicated

Skin and Skin Structure Infections Levofloxacin is indicated for the treatment of complicated skin and skin structure infections due to methicillin-susceptible Staphylococcus aureus, Enterococcus faecalis, Streptococcus pyogenes, or Proteus mirabilis.

1.5 Uncomplicated

Skin and Skin Structure Infections Levofloxacin is indicated for the treatment of uncomplicated skin and skin structure infections (mild to moderate) including abscesses, cellulitis, furuncles, impetigo, pyoderma, wound infections, due to methicillin-susceptible Staphylococcus aureus, or Streptococcus pyogenes.

1.6 Chronic

Bacterial Prostatitis Levofloxacin is indicated for the treatment of chronic bacterial prostatitis due to Escherichia coli, Enterococcus faecalis, or methicillin-susceptible Staphylococcus epidermidis.

1.7 Inhalational

Anthrax (Post-Exposure) Levofloxacin is indicated for inhalational anthrax (post-exposure) to reduce the incidence or progression of disease following exposure to aerosolized Bacillus anthracis. The effectiveness of levofloxacin 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 safety of levofloxacin in adults for durations of therapy beyond 28 days or in pediatric patients for durations of therapy beyond 14 days has not been studied. Prolonged levofloxacin therapy should only be used when the benefit outweighs the risk. 1.8 Plague Levofloxacin is indicated for treatment of plague, including pneumonic and septicemic plague, due to Yersinia pestis ( Y. pestis ) and prophylaxis for plague in adults and pediatric patients, 6 months of age and older. Efficacy studies of levofloxacin could not be conducted in humans with plague for ethical and feasibility reasons. Therefore, approval of this indication was based on an efficacy study conducted in animals.

1.9 Complicated

Urinary Tract Infections: 5-day Treatment Regimen Levofloxacin is indicated for the treatment of complicated urinary tract infections due to Escherichia coli, Klebsiella pneumoniae, or Proteus mirabilis.

1.10 Complicated

Urinary Tract Infections: 10-day Treatment Regimen Levofloxacin is indicated for the treatment of complicated urinary tract infections (mild to moderate) due to Enterococcus faecalis, Enterobacter cloacae, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, or Pseudomonas aeruginosa.

1.11 Acute Pyelonephritis: 5- or 10-day

Treatment Regimen Levofloxacin is indicated for the treatment of acute pyelonephritis caused by Escherichia coli, including cases with concurrent bacteremia.

1.12 Uncomplicated

Urinary Tract Infections Levofloxacin is indicated for the treatment of uncomplicated urinary tract infections (mild to moderate) due to Escherichia coli, Klebsiella pneumoniae, or Staphylococcus saprophyticus. Because fluoroquinolones, including levofloxacin, have been associated with serious adverse reactions and for some patients uncomplicated urinary tract infection is self-limiting, reserve levofloxacin for treatment of uncomplicated urinary tract infections in patients who have no alternative treatment options.

1.13 Acute Bacterial

Exacerbation of Chronic Bronchitis Levofloxacin is indicated for the treatment of acute bacterial exacerbation of chronic bronchitis (ABECB) due to methicillin-susceptible Staphylococcus aureus, Streptococcus pneumoniae, Haemophilus influenzae, Haemophilus parainfluenzae, or Moraxella catarrhalis. Because fluoroquinolones, including levofloxacin, have been associated with serious adverse reactions and for some patients ABECB is self-limiting, reserve levofloxacin for treatment of ABECB in patients who have no alternative treatment options.

1.14 Acute Bacterial

Sinusitis: 5-day and 10-14 day Treatment Regimens Levofloxacin is indicated for the treatment of acute bacterial sinusitis (ABS) due to Streptococcus pneumoniae, Haemophilus influenzae, or Moraxella catarrhalis. Because fluoroquinolones, including levofloxacin, have been associated with serious adverse reactions and for some patients ABS is self-limiting, reserve levofloxacin for treatment of ABS in patients who have no alternative treatment options. 1.15 Usage To reduce the development of drug-resistant bacteria and maintain the effectiveness of levofloxacin and other antibacterial drugs, levofloxacin should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy. Culture and susceptibility testing Appropriate culture and susceptibility tests should be performed before treatment in order to isolate and identify organisms causing the infection and to determine their susceptibility to levofloxacin. Therapy with levofloxacin may be initiated before results of these tests are known; once results become available, appropriate therapy should be selected. As with other drugs in this class, some isolates of Pseudomonas aeruginosa may develop resistance fairly rapidly during treatment with levofloxacin. Culture and susceptibility testing performed periodically during therapy will provide information about the continued susceptibility of the pathogens to the antimicrobial agent and also the possible emergence of bacterial resistance.

Text above is quoted in full from the FDA-approved drug label published by openFDA, effective September 1, 2025. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.

Description

Levofloxacin Oral Solution, USP is a synthetic broad-spectrum antibacterial agent 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 C 18 H 20 FN 3 O 4

1/2 H 2 O and the molecular weight is 370.38. Levofloxacin 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 is essentially constant (approximately 100 mg/mL). Levofloxacin 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 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. Excipients and Description of Dosage Forms Levofloxacin Oral Solution, USP Levofloxacin Oral Solution, USP, 25 mg/mL, is a multi-use self-preserving aqueous solution of levofloxacin with pH ranging from 5.0 to 6.0. The appearance of Levofloxacin Oral Solution, USP may range from clear yellow to clear greenish-yellow. This does not adversely affect product potency. Levofloxacin Oral Solution, USP contains the following inactive ingredients: sucrose, glycerin, saccharin sodium, Magnasweet 110F, hydrochloric acid, purified water, propylene glycol, peppermint flavor, FD&C Yellow No. 6, benzoic acid, and butylated hydroxyanisole. It may also contain a solution of sodium hydroxide for pH adjustment. levo-molec-struc

Text above is quoted in full from the FDA-approved drug label published by openFDA, effective September 1, 2025. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.

This page reproduces regulatory text for reference. It is not medical advice, and KenyRx is not a pharmacy or a prescriber. Talk to a doctor or pharmacist about whether a medicine is right for you.

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