U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS
This repository is under review for potential modification in compliance with Administration directives.

Details

Stereochemistry ABSOLUTE
Molecular Formula C18H20FN3O4
Molecular Weight 361.3675
Optical Activity UNSPECIFIED
Defined Stereocenters 1 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of LEVOFLOXACIN ANHYDROUS

SMILES

C[C@H]1COC2=C(N3CCN(C)CC3)C(F)=CC4=C2N1C=C(C(O)=O)C4=O

InChI

InChIKey=GSDSWSVVBLHKDQ-JTQLQIEISA-N
InChI=1S/C18H20FN3O4/c1-10-9-26-17-14-11(16(23)12(18(24)25)8-22(10)14)7-13(19)15(17)21-5-3-20(2)4-6-21/h7-8,10H,3-6,9H2,1-2H3,(H,24,25)/t10-/m0/s1

HIDE SMILES / InChI
Levofloxacin is the L-isomer of the racemate, ofloxacin, a quinolone antimicrobial agent. Levofloxacin is used for oral and intravenous administration. Levofloxacin is sold under brand name levaquin and is used to treat infections in adults (≥18 years of age) caused by designated, susceptible bacteria such as, pneumonia: nosocomial and community acquired; skin and skin structure infections: complicated and uncomplicated; chronic bacterial prostatitis; inhalational anthrax. In addition this drug is used to treat plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis. Levofloxacin, like other fluoroquinolones, inhibits the bacterial DNA gyrase, halting DNA replication. This results in strand breakage on a bacterial chromosome, supercoiling, and resealing. In addition, levofloxacin inhibits a bacterial type II topoisomerase.

CNS Activity

Curator's Comment: levofloxacin penetrates the cerebrospinal fluid (CSF) during meningeal inflammation both in animals and in humans

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
LEVAQUIN

Approved Use

LEVAQUIN 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 and plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis.

Launch Date

1996
Curative
LEVAQUIN

Approved Use

LEVAQUIN 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 and plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis.

Launch Date

1996
Curative
LEVAQUIN

Approved Use

LEVAQUIN 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 and plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis.

Launch Date

1996
Curative
LEVAQUIN

Approved Use

LEVAQUIN 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 and plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis.

Launch Date

1996
Curative
LEVAQUIN

Approved Use

LEVAQUIN 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 and plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis.

Launch Date

1996
Curative
LEVAQUIN

Approved Use

LEVAQUIN 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 and plague; urinary tract infections: complicated and uncomplicated; acute pyelonephritis; acute bacterial exacerbation of chronic bronchitis and acute bacterial sinusitis.

Launch Date

1996
Cmax

Cmax

ValueDoseCo-administeredAnalytePopulation
2.04 mg/L
200 mg single, oral
dose: 200 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
8.85 mg/L
1000 mg single, oral
dose: 1000 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: FASTED
11.8 mg/L
1000 mg 1 times / day multiple, oral
dose: 1000 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
7.8 mg/L
500 mg 2 times / day multiple, oral
dose: 500 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
6.3 mg/L
500 mg single, intravenous
dose: 500 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
7.9 mg/L
500 mg 2 times / day multiple, intravenous
dose: 500 mg
route of administration: Intravenous
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
AUC

AUC

ValueDoseCo-administeredAnalytePopulation
19.88 mg × h/L
200 mg single, oral
dose: 200 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
111 mg × h/L
1000 mg single, oral
dose: 1000 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: FASTED
118 mg × h/L
1000 mg 1 times / day multiple, oral
dose: 1000 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
59 mg × h/L
500 mg 2 times / day multiple, oral
dose: 500 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
55.3 mg × h/L
500 mg single, intravenous
dose: 500 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
49.6 mg × h/L
500 mg 2 times / day multiple, intravenous
dose: 500 mg
route of administration: Intravenous
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
T1/2

T1/2

ValueDoseCo-administeredAnalytePopulation
5.97 h
200 mg single, oral
dose: 200 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
7.9 h
1000 mg single, oral
dose: 1000 mg
route of administration: Oral
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: FASTED
8.9 h
1000 mg 1 times / day multiple, oral
dose: 1000 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
8.4 h
500 mg 2 times / day multiple, oral
dose: 500 mg
route of administration: Oral
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
6.6 h
500 mg single, intravenous
dose: 500 mg
route of administration: Intravenous
experiment type: SINGLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
7.6 h
500 mg 2 times / day multiple, intravenous
dose: 500 mg
route of administration: Intravenous
experiment type: MULTIPLE
co-administered:
LEVOFLOXACIN unknown
Homo sapiens
population: HEALTHY
age: ADULT
sex: UNKNOWN
food status: UNKNOWN
Doses

Doses

DosePopulationAdverse events​
250 mg 1 times / day multiple, oral
Recommended
Dose: 250 mg, 1 times / day
Route: oral
Route: multiple
Dose: 250 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Disc. AE: Gastrointestinal disorder, Nausea...
AEs leading to
discontinuation/dose reduction:
Gastrointestinal disorder (1.4%)
Nausea (0.6%)
Vomiting (0.4%)
Dizziness (0.3%)
Headache (0.2%)
Sources:
500 mg 1 times / day steady, oral
Recommended
Dose: 500 mg, 1 times / day
Route: oral
Route: steady
Dose: 500 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Disc. AE: Gastrointestinal disorder, Nausea...
AEs leading to
discontinuation/dose reduction:
Gastrointestinal disorder (1.4%)
Nausea (0.6%)
Vomiting (0.4%)
Dizziness (0.3%)
Headache (0.2%)
Sources:
750 mg 1 times / day steady, oral
Recommended
Dose: 750 mg, 1 times / day
Route: oral
Route: steady
Dose: 750 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Disc. AE: Gastrointestinal disorder, Nausea...
AEs leading to
discontinuation/dose reduction:
Gastrointestinal disorder (1.2%)
Nausea (0.6%)
Vomiting (0.5%)
Dizziness (0.3%)
Headache (0.3%)
Sources:
AEs

AEs

AESignificanceDosePopulation
Headache 0.2%
Disc. AE
250 mg 1 times / day multiple, oral
Recommended
Dose: 250 mg, 1 times / day
Route: oral
Route: multiple
Dose: 250 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Dizziness 0.3%
Disc. AE
250 mg 1 times / day multiple, oral
Recommended
Dose: 250 mg, 1 times / day
Route: oral
Route: multiple
Dose: 250 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Vomiting 0.4%
Disc. AE
250 mg 1 times / day multiple, oral
Recommended
Dose: 250 mg, 1 times / day
Route: oral
Route: multiple
Dose: 250 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Nausea 0.6%
Disc. AE
250 mg 1 times / day multiple, oral
Recommended
Dose: 250 mg, 1 times / day
Route: oral
Route: multiple
Dose: 250 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Gastrointestinal disorder 1.4%
Disc. AE
250 mg 1 times / day multiple, oral
Recommended
Dose: 250 mg, 1 times / day
Route: oral
Route: multiple
Dose: 250 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Headache 0.2%
Disc. AE
500 mg 1 times / day steady, oral
Recommended
Dose: 500 mg, 1 times / day
Route: oral
Route: steady
Dose: 500 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Dizziness 0.3%
Disc. AE
500 mg 1 times / day steady, oral
Recommended
Dose: 500 mg, 1 times / day
Route: oral
Route: steady
Dose: 500 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Vomiting 0.4%
Disc. AE
500 mg 1 times / day steady, oral
Recommended
Dose: 500 mg, 1 times / day
Route: oral
Route: steady
Dose: 500 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Nausea 0.6%
Disc. AE
500 mg 1 times / day steady, oral
Recommended
Dose: 500 mg, 1 times / day
Route: oral
Route: steady
Dose: 500 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Gastrointestinal disorder 1.4%
Disc. AE
500 mg 1 times / day steady, oral
Recommended
Dose: 500 mg, 1 times / day
Route: oral
Route: steady
Dose: 500 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Dizziness 0.3%
Disc. AE
750 mg 1 times / day steady, oral
Recommended
Dose: 750 mg, 1 times / day
Route: oral
Route: steady
Dose: 750 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Headache 0.3%
Disc. AE
750 mg 1 times / day steady, oral
Recommended
Dose: 750 mg, 1 times / day
Route: oral
Route: steady
Dose: 750 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Vomiting 0.5%
Disc. AE
750 mg 1 times / day steady, oral
Recommended
Dose: 750 mg, 1 times / day
Route: oral
Route: steady
Dose: 750 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Nausea 0.6%
Disc. AE
750 mg 1 times / day steady, oral
Recommended
Dose: 750 mg, 1 times / day
Route: oral
Route: steady
Dose: 750 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
Gastrointestinal disorder 1.2%
Disc. AE
750 mg 1 times / day steady, oral
Recommended
Dose: 750 mg, 1 times / day
Route: oral
Route: steady
Dose: 750 mg, 1 times / day
Sources:
unhealthy, mean 50 years
Health Status: unhealthy
Age Group: mean 50 years
Sex: M+F
Sources:
OverviewDrug as perpetrator​Drug as victim

Drug as victim

TargetModalityActivityMetaboliteClinical evidence
no
no
no
no
no
no
no
no
no
no
no
no
yes [Km 136 uM]
yes
yes
yes
yes
yes
Tox targets

Tox targets

TargetModalityActivityMetaboliteClinical evidence
Sourcing

Sourcing

Vendor/AggregatorIDURL
PubMed

PubMed

TitleDatePubMed
Comparative in vitro antimicrobial activities of the newly synthesized quinolone HSR-903, sitafloxacin (DU-6859a), gatifloxacin (AM-1155), and levofloxacin against Mycobacterium tuberculosis and Mycobacterium avium complex.
1999 Dec
Dual inhibitory activity of sitafloxacin (DU-6859a) against DNA gyrase and topoisomerase IV of Streptococcus pneumoniae.
1999 Oct
Purification and inhibition by quinolones of DNA gyrases from Mycobacterium avium, Mycobacterium smegmatis and Mycobacterium fortuitum bv. peregrinum.
1999 Sep
Activity of moxifloxacin against mycobacteria.
1999 Sep
Antibacterial spectrum of a novel des-fluoro(6) quinolone, BMS-284756.
2000 Dec
Prediction of quinolone activity against Mycobacterium avium by molecular topology and virtual computational screening.
2000 Oct
In vitro activity of levofloxacin against coagulase-positive and -negative staphylococci.
2001
A risk-benefit assessment of levofloxacin in respiratory, skin and skin structure, and urinary tract infections.
2001
The role of fluoroquinolones in tuberculosis today.
2001
[Use of levofloxacine in primary care for outbreaks in COPD].
2001 Apr 15
A nosocomial outbreak of fluoroquinolone-resistant Streptococcus pneumoniae.
2001 Aug 15
Lack of interaction between levofloxacin and oxycodone: pharmacokinetics and drug disposition.
2001 Feb
Single-dose pharmacokinetics of levofloxacin during continuous veno-venous haemofiltration in critically ill patients.
2001 Feb
In vitro activity of new quinolones against Clostridium difficile.
2001 Feb
Efficacy of moxifloxacin, trovafloxacin, clinafloxacin and levofloxacin against intracellular Legionella pneumophila.
2001 Feb
In vitro and in vivo antimicrobial activity of topical ofloxacin and other ototopical agents.
2001 Jan
In vitro activity of ketolides HMR 3004 and HMR 3647 and seven other antimicrobial agents against Corynebacterium diphtheriae.
2001 Jan
Measurement of the bactericidal activity of fluoroquinolones against Streptococcus pneumoniae using the bactericidal index method.
2001 Jan
A case of continuous ambulatory peritoneal dialysis peritonitis with an uncommon organism and an atypical clinical course.
2001 Jan
Interactions of a series of fluoroquinolone antibacterial drugs with the human cardiac K+ channel HERG.
2001 Jan
Use of a recombinant strain of Mycobacterium avium expressing beta-galactosidase to evaluate the activities of antimycobacterial agents inside macrophages.
2001 Jan
Comparative in vitro bacteriostatic and bactericidal activity of trovafloxacin, levofloxacin and moxifloxacin against clinical and environmental isolates of Legionella spp.
2001 Jul
Comparative killing kinetics of the novel des-fluoro(6) quinolone BMS-284756, fluoroquinolones, vancomycin and beta-lactams.
2001 Jul
New directions in antiinfective therapy for community-acquired pneumonia in the emergency department.
2001 Jul
A controlled trial of a critical pathway for treating community-acquired pneumonia: the CAPITAL study. Community-Acquired Pneumonia Intervention Trial Assessing Levofloxacin.
2001 Jul
Intravenous-to-oral transition therapy in community-acquired pneumonia: the INOVA Health System experience.
2001 Jul
Comparison of in-vitro activities of SCH27899 and other antibiotics against Mycoplasma pneumoniae.
2001 Jun
Antimicrobial resistance and serotype distribution of Streptococcus pneumoniae isolates from Crete, Greece.
2001 Jun
Activity of oral agents against pediatric isolates of Streptococcus pneumoniae.
2001 Mar
Antimicrobial activity of fluoroquinolone photodegradation products determined by parallel-line bioassay and high performance liquid chromatography.
2001 Mar
In vitro activity of gemifloxacin against Streptococcus pneumoniae isolates in Germany.
2001 Mar-Apr
Active intestinal secretion of new quinolone antimicrobials and the partial contribution of P-glycoprotein.
2001 May
Activity of moxifloxacin and other quinolones against pneumococci resistant to first-line agents, or with high-level ciprofloxacin resistance.
2001 May
Tissue penetration of a single dose of levofloxacin intravenously for antibiotic prophylaxis in lung surgery.
2001 May
Comparative in vitro activity of the new quinolone gemifloxacin (SB-265805) with other fluoroquinolones against respiratory tract pathogens.
2001 May
Cerebrospinal fluid penetration and pharmacokinetics of levofloxacin in an experimental rabbit meningitis model.
2001 May
Comparative in vitro activity of gemifloxacin, ciprofloxacin, levofloxacin and ofloxacin in a North American surveillance study.
2001 May-Jun
Activity of BMS284756 (T-3811) tested against anaerobic bacteria, Campylobacter jejuni, Helicobacter pylori and Legionella spp.
2001 May-Jun
In vitro activity of ABT-773 versus macrolides and quinolones against resistant respiratory tract pathogens.
2001 May-Jun
Molecular epidemiology and mutations at gyrA and parC genes of ciprofloxacin-resistant Escherichia coli isolates from a Taiwan medical center.
2001 Spring
Patents

Sample Use Guides

The usual dose of LEVAQUIN tablets or oral solution is 250 mg, 500 mg, or 750 mg administered orally every 24 hours. The usual dose of LEVAQUIN Injection is 250 mg or 500 mg administered by slow infusion over 60 minutes every 24 hours or 750 mg administered by slow infusion over 90 minutes every 24 hours. Nosocomial Pneumonia: 750 mg during 7–14 days Community Acquired Pneumonia: 500 mg during 7–14 days Community Acquired Pneumonia§ 750 mg during 5 days Complicated Skin and Skin Structure Infections (SSSI) 750 mg during 7–14 days Uncomplicated SSSI 500 mg during 7–10 days Chronic Bacterial Prostatitis 500 mg during 28 days Complicated Urinary Tract Infection (cUTI) or Acute Pyelonephritis (AP) 750 mg during 5 days Complicated Urinary Tract Infection (cUTI) or Acute Pyelonephritis (AP) 250 mg during 10 days Uncomplicated Urinary Tract Infection 250 mg 3 during days Acute Bacterial Exacerbation of Chronic Bronchitis (ABECB) 500 mg during 7 days Acute Bacterial Sinusitis (ABS) 750 mg days or 500 mg during 10–14 days.
Route of Administration: Other
In Vitro Use Guide
Levofloxacin was compared to ofloxacin and ciprofloxacin against > 6000 recent clinical isolates of Gram-positive and Gram-negative bacteria from six different countries. This international multicenter study demonstrated a high level of antibacterial activity of levofloxacin against all the members of Enterobacteriaceae [minimum inhibitory concentration (MIC)50s, < or = 0.03 to 0.12 mg/L] except Providencia rettgeri (MIC50, 2 mg/L), and Providencia stuartii (MIC50, 1 mg/L). Levofloxacin was also active against non-enteric Gram-negative bacilli, including Acinetobacter species (MIC50s, < or = 0.03 to 1 mg/L), Pseudomonas species (MIC50s, 0.5 to 1 mg/L) and Xanthomonas maltophilia (MIC50, 0.5 mg/L). Overall, levofloxacin inhibited 50% and 90% of all the tested strains at the concentrations of 0.12 and 4 mg/L, respectively. The activity of levofloxacin was generally two-fold greater than ofloxacin and equal to or slightly less potent than ciprofloxacin.
Name Type Language
OFLOXACIN S-(-)-FORM
MI  
Preferred Name English
LEVOFLOXACIN ANHYDROUS
Common Name English
OFLOXACIN S-(-)-FORM [MI]
Common Name English
Levofloxacin [WHO-DD]
Common Name English
NSC-758709
Code English
levofloxacin [INN]
Common Name English
Classification Tree Code System Code
WHO-ATC J01MA12
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
WHO-ATC S01AX19
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
Code System Code Type Description
HSDB
8028
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
SMS_ID
100000089067
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
EVMPD
SUB08471MIG
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
NSC
758709
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
FDA UNII
RIX4E89Y14
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
CHEBI
63598
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
DRUG BANK
DB01137
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
NCI_THESAURUS
C170539
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
CAS
100986-85-4
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
RXCUI
1546009
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY RxNorm
INN
6708
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
PUBCHEM
149096
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
EVMPD
SUB127353
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
MERCK INDEX
m8133
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY Merck Index
EPA CompTox
DTXSID0041060
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY
DAILYMED
RIX4E89Y14
Created by admin on Mon Mar 31 18:07:12 GMT 2025 , Edited by admin on Mon Mar 31 18:07:12 GMT 2025
PRIMARY