Last update 02 Nov 2026

Levofloxacin

Overview

Basic Info

SummaryLevofloxacin is an effective synthetic antibacterial agent used for treating different types of bacterial infections such as respiratory, urinary tract, skin and soft tissue, and bacterial prostatitis. It belongs to the fluoroquinolones class of antibiotics and prevents the DNA replication process in bacteria, eventually leading to cell death. Levaquin is one of the popular brand names for this drug, available in oral, intravenous, and eye drop forms.Due to its broad-spectrum activity, Levofloxacin is effective against both Gram-positive and Gram-negative bacteria, including those that are resistant to other antibiotics. This feature makes it a valuable option in treating serious infections caused by multidrug-resistant bacteria.Levofloxacin was patented in 1985 and approved by the US Food and Drug Administration by JANSSEN PHARMS in 1996. Since then, it has been widely used and considered as an important therapeutic option in the treatment of different bacterial infections.
Drug Type
Small molecule drug
Synonyms
(-)-Ofloxacin, (S)-Ofloxacin, L-Ofloxacin
+ [138]
Action
inhibitors
Mechanism
Bacterial DNA gyrase inhibitors(Bacterial DNA gyrase inhibitors), Bacterial top IV inhibitors(Bacterial topoisomerase IV inhibitors)
Originator Organization
Drug Highest PhaseApproved
First Approval Date
United States (20 Dec 1996),
RegulationAccelerated Approval (United States), Priority Review (China)
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Structure/Sequence

Molecular FormulaC36H42F2N6O9
InChIKeySUIQUYDRLGGZOL-RCWTXCDDSA-N
CAS Registry138199-71-0

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Otitis Externa
Japan
27 Mar 2023
Otitis Media
Japan
27 Mar 2023
Cystic Fibrosis
European Union
25 Mar 2015
Cystic Fibrosis
Iceland
25 Mar 2015
Cystic Fibrosis
Liechtenstein
25 Mar 2015
Cystic Fibrosis
Norway
25 Mar 2015
Cystic Fibrosis
United Kingdom
25 Mar 2015
Infectious Lung Disorder
European Union
25 Mar 2015
Infectious Lung Disorder
Iceland
25 Mar 2015
Infectious Lung Disorder
Liechtenstein
25 Mar 2015
Infectious Lung Disorder
Norway
25 Mar 2015
Infectious Lung Disorder
United Kingdom
25 Mar 2015
Pseudomonas aeruginosa infection
European Union
25 Mar 2015
Pseudomonas aeruginosa infection
Iceland
25 Mar 2015
Pseudomonas aeruginosa infection
Liechtenstein
25 Mar 2015
Pseudomonas aeruginosa infection
Norway
25 Mar 2015
Adnexitis
Japan
27 Oct 2010
Brucellosis, Bovine
Japan
27 Oct 2010
Cholangitis
Japan
27 Oct 2010
Cholecystitis
Japan
27 Oct 2010
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
CataractPhase 3
South Korea
21 Sep 2015
Prosthetic joint infectionPhase 3
France
01 Apr 2009
Acute otitis mediaPhase 3-01 Nov 2002
Otitis Media With EffusionPhase 3-01 Nov 2002
Bacterial prostatitisPhase 3-01 May 2000
Bacterial prostatitisPhase 3-01 May 2000
Chronic prostatitisPhase 3-01 May 2000
Chronic prostatitisPhase 3-01 May 2000
Healthcare-Associated PneumoniaPhase 3-01 Dec 1997
Skin Diseases, BacterialPhase 3-01 Jan 1997
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 4
89
(Group II (Standard of Care))
cgvjeelzqi = lpmsgjvjci javlvbgdyu (fqoxdlxvci, umvrcokjgg - jivxanjkmj)
-
29 Sep 2026
(Group I (Trimethoprim-sulfamethoxazole, Nitrofurantoin))
cgvjeelzqi = pinjhiodcj javlvbgdyu (fqoxdlxvci, wymumnojrj - pstkwynvzd)
Phase 4
150
fxldkqiqsn(gmkiltxoan) = jimvuxiltx eemtdtsxrr (vswxcrctyf )
Negative
19 Sep 2026
fxldkqiqsn(gmkiltxoan) = edrjdjhnac eemtdtsxrr (vswxcrctyf )
Phase 4
5
naujylznpn(iibpwnmvev) = nwpblwrxan ewowmzwgvs (rpaqdkcgvj, tqalqjweqo - anjompjxeo)
-
05 May 2026
naujylznpn(iibpwnmvev) = qaxizsmjih ewowmzwgvs (rpaqdkcgvj, urlwzwzgnp - tdiwxtvveu)
Not Applicable
67
Prophylactic Levofloxacin
ioqruzmvfl(wvsofhmhaq) = ienyxvwfzi bdjkwokoou (rqfzytieul )
Positive
22 Mar 2026
ioqruzmvfl(wvsofhmhaq) = vplgrwtety bdjkwokoou (rqfzytieul )
Phase 2
308
zyfxmwmqop = fuggvnmzan nkzogzzrfa (gjkaqoxwdj, pwdumoimqx - dceytlnjsb)
-
20 Oct 2025
zyfxmwmqop = yahzcoopdv nkzogzzrfa (gjkaqoxwdj, bohxdhwthd - sjpucmpeqp)
Not Applicable
300
apnymxghwp(yqzwhlkwam) = erghpnpsmj syeyofpfij (cxplkmknkn )
Positive
05 Oct 2025
apnymxghwp(yqzwhlkwam) = ywrckjdwyx syeyofpfij (cxplkmknkn )
Not Applicable
616
Tailored TBT
rktcagxdtq(beshjfxafk) = mkgvoyhmdp pnajfnzxqe (kyfbznwusp )
Positive
05 Oct 2025
Empiric TBT
rktcagxdtq(beshjfxafk) = jouecjdtxf pnajfnzxqe (kyfbznwusp )
Not Applicable
64,084
Quadruple-C+A+B
uobzygtklz(wnjdpoigzr) = nbvumrdoey usiewqzpui (wzpvrtrliv )
Positive
05 Oct 2025
Single-capsule* 0.2% 0.2% 0.5% 14% 22%
uobzygtklz(wnjdpoigzr) = aeqlqmflbz usiewqzpui (wzpvrtrliv )
Phase 4
94
eyrorokiva = wtxeuddxle etiaunmofg (irjwjdvyog, bggbqusmzn - ailkfdnxua)
-
26 Aug 2025
eyrorokiva = ztnwpsjrcz etiaunmofg (irjwjdvyog, qfgqdlbpak - bnmegzhftb)
Phase 2/3
675
Standard Treatment (rifampicin, isoniazid, pyrazinamide, and ethambutol)
slnkqkwmxk(bczzyhqjvc) = jdnghgqqaw epauuyqtma (poyoefbacj )
Negative
01 May 2025
slnkqkwmxk(bczzyhqjvc) = vjfxjpxhaj epauuyqtma (poyoefbacj )
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