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Chemistry

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Also known as: 100986-85-4, Levaquin, Quixin, (-)-ofloxacin, Cravit, Iquix
Molecular Formula
C18H20FN3O4
Molecular Weight
361.4  g/mol
InChI Key
GSDSWSVVBLHKDQ-JTQLQIEISA-N
FDA UNII
RIX4E89Y14

Levofloxacin
The L-isomer of Ofloxacin.
1 2D Structure

Levofloxacin

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
(2S)-7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid
2.1.2 InChI
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
2.1.3 InChI Key
GSDSWSVVBLHKDQ-JTQLQIEISA-N
2.1.4 Canonical SMILES
CC1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O
2.1.5 Isomeric SMILES
C[C@H]1COC2=C3N1C=C(C(=O)C3=CC(=C2N4CCN(CC4)C)F)C(=O)O
2.2 Other Identifiers
2.2.1 UNII
RIX4E89Y14
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Anhydrous, Levofloxacin

2. Levaquin

3. Levofloxacin Anhydrous

4. Ofloxacin, (s)-isomer

5. Quixin

2.3.2 Depositor-Supplied Synonyms

1. 100986-85-4

2. Levaquin

3. Quixin

4. (-)-ofloxacin

5. Cravit

6. Iquix

7. Ofloxacin S-(-)-form

8. Tavanic

9. Levofloxacine

10. (s)-ofloxacin

11. L-ofloxacin

12. Levofloxacino

13. Levofloxacinum

14. Oftaquix

15. Floxacin

16. Levofloxacin Anhydrous

17. Dr-3355

18. Nofaxin

19. Volequin

20. Fluoroquinolone

21. Levofloxacin Hydrate

22. Mp-376

23. Levofloxacin (inn)

24. Levofloxacin (levaquin)

25. Rwj-25213

26. Levaquin (tn)

27. Elequine

28. (3s)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2,3-dihydro-7h-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic Acid

29. (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

30. Nsc-758709

31. Rix4e89y14

32. 7h-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid, 9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-, (3s)-

33. Chebi:63598

34. Quinsair

35. Mfcd00865049

36. (s)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2,3-dihydro-7h-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic Acid

37. Ofloxacin, (s)-

38. Levofloxacin [inn]

39. (s)-(-)-ofloxacin

40. (3s)-(-)-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7h-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic Acid

41. Lfx

42. Levofloxacine [inn-french]

43. Levofloxacinum [inn-latin]

44. Levofloxacino [inn-spanish]

45. Dr3355

46. Hr 355

47. Aeroquin

48. Unibiotic

49. Venaxan

50. Levofloxacin [usan:inn:jan]

51. Loxof

52. Levofloxacin (as Hemihydrate)

53. Rwj 25213-097

54. (2s)-7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.0^{5,13}]trideca-5(13),6,8,11-tetraene-11-carboxylic Acid

55. (s)-(-)-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7h-pyrido[1,2,3-de][1,4]benzooxazine-6-carboxylic Acid

56. (s)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-7h-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic Acid

57. Smr000466387

58. Cravit (tn)

59. S-(-)-ofloxacin

60. Ccris 4074

61. (s)-9-fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-3,7-dihydro-2h-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic Acid

62. Levaquin In Dextrose 5% In Plastic Container

63. Unii-rix4e89y14

64. Levofiexacin

65. Ofloxcacin

66. S-ofloxacin

67. Hsdb 8028

68. Cravit Iv

69. Levofloxacin,(s)

70. Anhydrous Ofloxacin

71. Dr-3355: L-isomer Of Ofloxacin

72. (3s)-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

73. Hr-355

74. Mp 376

75. Spectrum_001719

76. Cpd000466387

77. Spectrum2_001676

78. Spectrum3_000995

79. Spectrum4_001123

80. Spectrum5_001438

81. Schembl15397

82. Bspbio_002689

83. Kbiogr_001605

84. Kbioss_002199

85. (-)-(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

86. Fluoro-methyl-(4-methylpiperazin-1-yl)-oxo-[?]carboxylic Acid

87. Mls000759524

88. Mls001165709

89. Mls001423977

90. Levofloxacin [who-dd]

91. Spectrum1504260

92. Spbio_001891

93. Dtxsid0041060

94. Gtpl10911

95. Kbio2_002199

96. Kbio2_004767

97. Kbio2_007335

98. Kbio3_001909

99. Ofloxacin S-(-)-form Hemihydrate

100. Hms1922j07

101. Hms2051g04

102. Hms2090o10

103. Hms2093e18

104. Hms2232g06

105. Pharmakon1600-01504260

106. Zinc538273

107. Ex-a1488

108. Hy-b0330

109. Levofloxacin, >=98.0% (hplc)

110. Bdbm50366826

111. Ccg-39093

112. De-108

113. Mmv687798

114. Nsc755604

115. Nsc758709

116. S1940

117. Ofloxacin S-(-)-form [mi]

118. Akos008901361

119. Akos015895104

120. Ac-7593

121. Db01137

122. Nc00094

123. Nsc 758709

124. Nsc-755604

125. Ncgc00178529-01

126. Ncgc00178529-02

127. Ncgc00178529-03

128. Ncgc00178529-06

129. 7h-pyrido(1,2,3-de)-1,4-benzoxazine-6-carboxylic Acid, 2,3-dihydro-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-, (s)-

130. As-31796

131. Lvx

132. Levofloxacin, Analytical Reference Material

133. Sbi-0206768.p001

134. L0193

135. C07660

136. D08120

137. Ab00171657-12

138. Ab00171657-13

139. Ab00171657_14

140. Ab00171657_15

141. 986l854

142. Q424193

143. Sr-05000001999

144. Levofloxacin, Antibiotic For Culture Media Use Only

145. Q-201295

146. Sr-05000001999-1

147. Brd-k09471561-001-06-7

148. Tert-butyl?2-(hydroxymethyl)pyrrolidine-1-carboxylate

149. Z1766089137

150. Levofloxacin Solution, 1.0 Mg/ml In Acetonitrile, Certified Reference Material

151. (2s)-7-fluoro-2-methyl-6-(4-methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic Acid

152. (2s)-7-fluoro-2-methyl-6-(4-methylpiperazin-4-ium-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylate

153. (s)-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-2,3-dihydro-7h-pyrido[1,2,3-de][1,4]-benzoxazine-6-carboxylic Acid

2.4 Create Date
2005-07-09
3 Chemical and Physical Properties
Molecular Weight 361.4 g/mol
Molecular Formula C18H20FN3O4
XLogP3-0.4
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count8
Rotatable Bond Count2
Exact Mass361.14378429 g/mol
Monoisotopic Mass361.14378429 g/mol
Topological Polar Surface Area73.3 Ų
Heavy Atom Count26
Formal Charge0
Complexity634
Isotope Atom Count0
Defined Atom Stereocenter Count1
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Drug Information
1 of 6  
Drug NameLevaquin
PubMed HealthLevofloxacin (Injection)
Drug ClassesAntibiotic
Drug LabelLEVAQUIN is a synthetic broad-spectrum antibacterial agent for oral and intravenous administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemica...
Active IngredientLevofloxacin
Dosage FormTablet; Injectable; Solution
RouteInjection; Oral
Strength250mg; 250mg/10ml; 500mg; eq 500mg/20ml (eq 25mg/ml); eq 750mg/30ml (eq 25mg/ml); 750mg
Market StatusPrescription
CompanyJanssen Pharms

2 of 6  
Drug NameLevofloxacin
PubMed HealthLevofloxacin
Drug ClassesAntibiotic
Drug LabelLevofloxacin is a synthetic broad-spectrum antibacterial agent for oral and intravenous administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemi...
Active Ingredientsodium chloride; Levofloxacin
Dosage FormSolution/drops; Tablet; Injectable; Solution
Routeinjection; Ophthalmic; oral; Injection; Oral
Strength0.5%; 250mg; 250mg/10ml; 500mg; eq 500mg/20ml (eq 25mg/ml); eq 750mg/30ml (eq 25mg/ml); 25mg/ml; 5mg/ml; 750mg
Market StatusTentative Approval; Prescription
CompanyWockhardt; Mylan Pharma; Hospira; Teva; Apotex; Aurobindo Pharma; Torrent Pharms; Lupin; Sandoz; Cipla; Hikma Pharms; Watson Labs; Nexus Pharms; Glenmark Generics; Emcure Pharms; Hi Tech Pharma; Macleods Pharms; Claris Lifesciences; Sagent Pharms; Zydus P

3 of 6  
Drug NameQuixin
PubMed HealthLevofloxacin
Drug ClassesAntibiotic
Drug LabelQUIXIN (levofloxacin ophthalmic solution) 0.5% is a sterile topical ophthalmic solution. Levofloxacin is a fluoroquinolone antibacterial active against a broad spectrum of Gram-positive and Gram-negative ocular pathogens. Levofloxacin is the pure (...
Active IngredientLevofloxacin
Dosage FormSolution/drops
RouteOphthalmic
Strength0.5%
Market StatusPrescription
CompanySanten

4 of 6  
Drug NameLevaquin
PubMed HealthLevofloxacin (Injection)
Drug ClassesAntibiotic
Drug LabelLEVAQUIN is a synthetic broad-spectrum antibacterial agent for oral and intravenous administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemica...
Active IngredientLevofloxacin
Dosage FormTablet; Injectable; Solution
RouteInjection; Oral
Strength250mg; 250mg/10ml; 500mg; eq 500mg/20ml (eq 25mg/ml); eq 750mg/30ml (eq 25mg/ml); 750mg
Market StatusPrescription
CompanyJanssen Pharms

5 of 6  
Drug NameLevofloxacin
PubMed HealthLevofloxacin
Drug ClassesAntibiotic
Drug LabelLevofloxacin is a synthetic broad-spectrum antibacterial agent for oral and intravenous administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemi...
Active Ingredientsodium chloride; Levofloxacin
Dosage FormSolution/drops; Tablet; Injectable; Solution
Routeinjection; Ophthalmic; oral; Injection; Oral
Strength0.5%; 250mg; 250mg/10ml; 500mg; eq 500mg/20ml (eq 25mg/ml); eq 750mg/30ml (eq 25mg/ml); 25mg/ml; 5mg/ml; 750mg
Market StatusTentative Approval; Prescription
CompanyWockhardt; Mylan Pharma; Hospira; Teva; Apotex; Aurobindo Pharma; Torrent Pharms; Lupin; Sandoz; Cipla; Hikma Pharms; Watson Labs; Nexus Pharms; Glenmark Generics; Emcure Pharms; Hi Tech Pharma; Macleods Pharms; Claris Lifesciences; Sagent Pharms; Zydus P

6 of 6  
Drug NameQuixin
PubMed HealthLevofloxacin
Drug ClassesAntibiotic
Drug LabelQUIXIN (levofloxacin ophthalmic solution) 0.5% is a sterile topical ophthalmic solution. Levofloxacin is a fluoroquinolone antibacterial active against a broad spectrum of Gram-positive and Gram-negative ocular pathogens. Levofloxacin is the pure (...
Active IngredientLevofloxacin
Dosage FormSolution/drops
RouteOphthalmic
Strength0.5%
Market StatusPrescription
CompanySanten

4.2 Therapeutic Uses

Anti-Bacterial Agents; Anti-Infective Agents, Urinary; Nucleic Acid Synthesis Inhibitors

National Library of Medicine's Medical Subject Headings online file (MeSH, 2012)


Levofloxacin is used for the treatment of acute bacterial sinusitis caused by susceptible Streptococcus pneumoniae, Haemophilus influenzae, or Moraxella catarrhalis. /Included in US product label/

American Society of Health-System Pharmacists 2011; Drug Information 2011. Bethesda, MD. 2011, p. 385


Levofloxacin is used for the treatment of community-acquired pneumonia caused by susceptible S. aureus (oxacillin-susceptible strains), S. pneumoniae (including penicillin-resistant strains (penicillin MIC of 2 ug/mL or greater)), H. influenzae, H. parainfluenzae, Klebsiella pneumoniae, Legionella pneumophila, M. catarrhalis, Chlamydophila pneumoniae (formerly Chlamydia pneumoniae), or Mycoplasma pneumoniae. /Included in US product label/

American Society of Health-System Pharmacists 2011; Drug Information 2011. Bethesda, MD. 2011, p. 385


Levofloxacin is used for the treatment of mild to moderate complicated urinary tract infections caused by susceptible E. faecalis, Enterobacter cloacae, E. coli, K. pneumoniae, P. mirabilis, or Ps. aeruginosa and acute pyelonephritis caused by susceptible E. coli, including cases with concurrent bacteremia. /Included in US product label/

American Society of Health-System Pharmacists 2011; Drug Information 2011. Bethesda, MD. 2011, p. 386


For more Therapeutic Uses (Complete) data for Levofloxacin (23 total), please visit the HSDB record page.


4.3 Drug Warning

/BOXED WARNING/ WARNING: Fluoroquinolones, including Levaquin, are associated with an increased risk of tendinitis and tendon rupture in all ages. This risk is further increased in older patients usually over 60 years of age, in patients taking corticosteroid drugs, and in patients with kidney, heart or lung transplants.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=a1f01e8e-97e9-11de-b91d-553856d89593


/BOXED WARNING/ WARNING: Fluoroquinolones, including Levaquin may exacerbate muscle weakness in persons with myasthenia gravis. Avoid Levaquin in patients with a known history of myasthenia gravis

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=a1f01e8e-97e9-11de-b91d-553856d89593


Other serious and sometimes fatal events, some due to hypersensitivity, and some due to uncertain etiology, have been reported rarely in patients receiving therapy with fluoroquinolones, including Levaquin. These events may be severe and generally occur following the administration of multiple doses. Clinical manifestations may include one or more of the following: fever, rash, or severe dermatologic reactions (e.g., toxic epidermal necrolysis, Stevens-Johnson Syndrome); vasculitis; arthralgia; myalgia; serum sickness; allergic pneumonitis; interstitial nephritis; acute renal insufficiency or failure; hepatitis; jaundice; acute hepatic necrosis or failure; anemia, including hemolytic and aplastic; thrombocytopenia, including thrombotic thrombocytopenic purpura; leukopenia; agranulocytosis; pancytopenia; and/or other hematologic abnormalities. The drug should be discontinued immediately at the first appearance of skin rash, jaundice, or any other sign of hypersensitivity and supportive measures instituted.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


Post-marketing reports of severe hepatotoxicity (including acute hepatitis and fatal events) have been received for patients treated with Levaquin No evidence of serious drug-associated hepatotoxicity was detected in clinical trials of over 7,000 patients. Severe hepatotoxicity generally occurred within 14 days of initiation of therapy and most cases occurred within 6 days. Most cases of severe hepatotoxicity were not associated with hypersensitivity. The majority of fatal hepatotoxicity reports occurred in patients 65 years of age or older and most were not associated with hypersensitivity. Levaquin should be discontinued immediately if the patient develops signs and symptoms of hepatitis.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


For more Drug Warnings (Complete) data for Levofloxacin (19 total), please visit the HSDB record page.


4.4 Drug Indication

In oral and intravenous formulations, levofloxacin is indicated in adults for the treatment of various infections caused by susceptible bacteria, including infections of the upper respiratory tract, lower respiratory tract, skin, skin structures, urinary tract, and prostate. The oral formulation is also indicated in both adults and children 6 months of age and older for the post-exposure management of inhalational anthrax caused by _Bacillus anthracis_ and for the treatment and/or prophylaxis of plague caused by _Yersinia pestis_. In its ophthalmic formulation, levofloxacin is indicated for the treatment of bacterial conjunctivitis caused by susceptible organisms. An inhalational solution available in Canada is indicated for the management of cystic fibrosis patients aged 18 years or older with chronic pulmonary _Pseudomonas aeruginosa_ infections.


FDA Label


Quinsair is indicated for the management of chronic pulmonary infections due to Pseudomonas aeruginosa in adult patients with cystic fibrosis.

Consideration should be given to official guidance on the appropriate use of antibacterial agents.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Levofloxacin is bactericidal and exerts its antimicrobial effects via inhibition of bacterial DNA replication. It has a relatively long duration of action in comparison with other antibiotics that allows for once or twice daily dosing. Levofloxacin is associated with QTc-interval prolongation and should be used with caution in patients with other risk factors for prolongation (e.g. hypokalemia, concomitant medications). Levofloxacin has demonstrated _in vitro_ activity against a number of aerobic gram-positive and gram-negative bacteria and may carry some activity against certain species of anaerobic bacteria and other pathogens such as _Chlamydia_ and _Legionella_. Resistance to levofloxacin may develop, and is generally due to mutations in DNA gyrase or topoisomerase IV, or via alterations to drug efflux. Cross-resistance may occur between levofloxacin and other fluoroquinolones, but is unlikely to develop between levofloxacin and other antibiotic classes (e.g. macrolides) due to significant differences in chemical structure and mechanism of action. As antimicrobial susceptibility patterns are geographically distinct, local antibiograms should be consulted to ensure adequate coverage of relevant pathogens prior to use.


5.2 MeSH Pharmacological Classification

Anti-Bacterial Agents

Substances that inhibit the growth or reproduction of BACTERIA. (See all compounds classified as Anti-Bacterial Agents.)


Anti-Infective Agents, Urinary

Substances capable of killing agents causing urinary tract infections or of preventing them from spreading. (See all compounds classified as Anti-Infective Agents, Urinary.)


Cytochrome P-450 CYP1A2 Inhibitors

Drugs and compounds which inhibit or antagonize the biosynthesis or actions of CYTOCHROME P-450 CYP1A2. (See all compounds classified as Cytochrome P-450 CYP1A2 Inhibitors.)


Topoisomerase II Inhibitors

Compounds that inhibit the activity of DNA TOPOISOMERASE II. Included in this category are a variety of ANTINEOPLASTIC AGENTS which target the eukaryotic form of topoisomerase II and ANTIBACTERIAL AGENTS which target the prokaryotic form of topoisomerase II. (See all compounds classified as Topoisomerase II Inhibitors.)


5.3 ATC Code

J01MA12


J01MA12

S76 | LUXPHARMA | Pharmaceuticals Marketed in Luxembourg | Pharmaceuticals marketed in Luxembourg, as published by d'Gesondheetskeess (CNS, la caisse nationale de sante, www.cns.lu), mapped by name to structures using CompTox by R. Singh et al. (in prep.). List downloaded from https://cns.public.lu/en/legislations/textes-coordonnes/liste-med-comm.html. Dataset DOI:10.5281/zenodo.4587355


J - Antiinfectives for systemic use

J01 - Antibacterials for systemic use

J01M - Quinolone antibacterials

J01MA - Fluoroquinolones

J01MA12 - Levofloxacin


S - Sensory organs

S01 - Ophthalmologicals

S01A - Antiinfectives

S01AE - Fluoroquinolones

S01AE05 - Levofloxacin


5.4 Absorption, Distribution and Excretion

Absorption

Absorption of levofloxacin following oral administration is rapid and essentially complete, with an oral bioavailability of approximately 99%. Due to its nearly complete absorption, the intravenous and oral formulations of levofloxacin may be interchangeable. The Tmax is generally attained 1-2 hours following administration and the Cmax is proportional to the given dose - an intravenous dose of 500mg infused over 60 minutes resulted in a Cmax of 6.2 1.0 g/mL whereas a 750mg dose infused over 90 minutes resulted in a Cmax of 11.5 4.0 g/mL. Oral administration with food prolongs the Tmax by approximately 1 hour and slightly decreases the Cmax, but these changes are not likely to be clinically significant. Systemic absorption following oral inhalation is approximately 50% lower than that observed following oral administration.


Route of Elimination

The majority of administered levofloxacin is excreted unchanged in the urine. Following the administration of a single oral dose of levofloxacin, approximately 87% was eliminated unchanged in the urine within 48 hours and less than 4% was eliminated in the feces within 72 hours.


Volume of Distribution

Levofloxacin is widely distributed in the body, with an average volume of distribution following oral administration between 1.09-1.26 L/kg (~89-112 L). Concentrations in many tissues and fluids may exceed those observed in plasma. Levofloxacin is known to penetrate well into skin tissue, fluids (e.g. blisters), lung tissue, and prostatic tissue, amongst others.


Clearance

The average apparent total body clearance of levofloxacin ranges from 8.64-13.56 L/h, and its renal clearance ranges from 5.76-8.52 L/h. The relative similarity of these ranges indicates a small degree of non-renal clearance.


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 levaquin, 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 ug/g over a 24-hour period after a single 500 mg oral dose.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


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 + or - SD peak and trough plasma concentrations attained following multiple once-daily oral dosage regimens were approximately 5.7 + or - 1.4 and 0.5 + or - 0.2 ug/mL after the 500 mg doses, and 8.6+ or - 1.9 and 1.1 + or - 0.4 ug/mL after the 750 mg doses, respectively. The mean + or - SD peak and trough plasma concentrations attained following multiple once-daily IV regimens were approximately 6.4 + or - 0.8 and 0.6 + or - 0.2 ug/mL after the 500 mg doses, and 12.1+ or - 4.1 and 1.3 + or - 0.71 ug/mL after the 750 mg doses, respectively. Oral administration of a 500 mg dose of levaquin 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, levaquin tablets can be administered without regard to food. It is recommended that levaquin oral solution be taken 1 hour before or 2 hours after eating.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


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 Levaquin are both approximately 99%, demonstrating complete oral absorption of levofloxacin. Following a single intravenous dose of Levaquin to healthy volunteers, the mean + or - SD peak plasma concentration attained was 6.2 + or - 1.0 ug/mL after a 500 mg dose infused over 60 minutes and 11.5+ or - 4.0 ug/mL after a 750 mg dose infused over 90 minutes.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


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 levaquin.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


For more Absorption, Distribution and Excretion (Complete) data for Levofloxacin (6 total), please visit the HSDB record page.


5.5 Metabolism/Metabolites

Only 2 metabolites, desmethyl-levofloxacin and levofloxacin-N-oxide, have been identified in humans, neither of which appears to carry any relevant pharmacological activity. Following oral administration, less than 5% of the administered dose was recovered in the urine as these metabolites, indicating very little metabolism of levofloxacin in humans. The specific enzymes responsible for the demethylation and oxidation of levofloxacin have yet to be ascertained.


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.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


5.6 Biological Half-Life

The average terminal elimination half-life of levofloxacin is 6-8 hours.


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.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


The pharmacokinetics of oral levofloxacin and its penetration into inflammatory fluid were studied in 6 healthy male subjects (ages 18-45 yr) who received 500 mg drug every 12 hr for 5 doses or 500 mg every 24 hr for 3 doses in an open crossover design. ... Mean terminal elimination half-lives in plasma were 7.9 and 8 hr for the 2 regimens, respectively, and the same values were seen for inflammatory fluid. ...

Child J et al; Chemother 39 (Dec): 2749-51 (1995)


After single oral administration of (14)C-levofloxacin at a dose of 20 mg kg(-1) under non-fasting conditions, the absorption, distribution and excretion of radioactivity were studied in albino and pigmented rats. ... The uveal tract concentrations reached the maximum value (C(max)) of 26.33 +/- 0.75 ug eq. g(-1) at 24 hr after dosing and declined slowly with a terminal half-life of 468.1 hr (19.5 days).

PMID:15099441 Tanaka M et al; J Pharm Pharmacol 56 (4): 463-9 (2004)


5.7 Mechanism of Action

Levofloxacin, like other fluoroquinolone antibiotics, exerts its antimicrobial activity via the inhibition of two key bacterial enzymes: DNA gyrase and topoisomerase IV. Both targets are type II topoisomerases, but have unique functions within the bacterial cell. DNA gyrase is an enzyme found only in bacteria that introduces negative supercoils into DNA during replication - this helps to relieve torsional strain caused by the introduction of positive supercoils during replication, and these negative supercoils are essential for chromosome condensation and the promotion of transcription initiation. It is comprised of four subunits (two A subunits and two B subunits) of which the A subunits appear to be the target of fluoroquinolone antibiotics. Bacterial topoisomerase IV, in addition to contributing to the relaxation of positive supercoils, is essential at the terminal stages of DNA replication and functions to unlink newly replicated chromosomes to allow for the completion of cell division. Inhibition of these enzymes by levofloxacin likely occurs via complexation with the topoisomerase enzymes. The end result is a blockade of DNA replication, thus inhibiting cell division and resulting in cell death.


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.

US Natl Inst Health; DailyMed. Current Medication Information for LEVAQUIN (levofloxacin) tablet, film coated for oral use; LEVAQUIN (levofloxacin) solution for oral use; LEVAQUIN (levofloxacin) injection, solution, concentrate for intravenous use; LEVAQUIN (levofloxacin) injection, solution for intravenous use (October 2011). Available from, as of March 7, 2012: https://dailymed.nlm.nih.gov/dailymed/search.cfm?startswith=levofloxacin


Fluoroquinolones prolong the QT interval by blocking voltage-gated potassium channels, especially the rapid component of the delayed rectifier potassium current I(Kr), expressed by HERG (the human ether-a-go-go-related gene). According to the available case reports and clinical studies, moxifloxacin carries the greatest risk of QT prolongation from all available quinolones in clinical practice and it should be used with caution in patients with predisposing factors for Torsades de pointes (TdP).

PMID:22156660 Briasoulis A et al; Cardiology 120 (2): 103-10 (2011)


DRUG PRODUCT COMPOSITIONS

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DOSAGE - TABLET;ORAL - 250MG **Federal Regist...DOSAGE - TABLET;ORAL - 250MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**

USFDA APPLICATION NUMBER - 20634

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DOSAGE - TABLET;ORAL - 500MG **Federal Regist...DOSAGE - TABLET;ORAL - 500MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**

USFDA APPLICATION NUMBER - 20634

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DOSAGE - TABLET;ORAL - 750MG **Federal Regist...DOSAGE - TABLET;ORAL - 750MG **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**

USFDA APPLICATION NUMBER - 20634

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DOSAGE - SOLUTION/DROPS;OPHTHALMIC - 0.5% **F...DOSAGE - SOLUTION/DROPS;OPHTHALMIC - 0.5% **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**

USFDA APPLICATION NUMBER - 21199

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DOSAGE - SOLUTION/DROPS;OPHTHALMIC - 1.5% **F...DOSAGE - SOLUTION/DROPS;OPHTHALMIC - 1.5% **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**

USFDA APPLICATION NUMBER - 21571

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DOSAGE - SOLUTION;ORAL - 250MG/10ML

USFDA APPLICATION NUMBER - 21721

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ABOUT THIS PAGE

Looking for 100986-85-4 / Levofloxacin API manufacturers, exporters & distributors?

Levofloxacin manufacturers, exporters & distributors 1

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PharmaCompass offers a list of Levofloxacin API manufacturers, exporters & distributors, which can be sorted by GMP, USDMF, JDMF, KDMF, CEP (COS), WC, Price,and more, enabling you to easily find the right Levofloxacin manufacturer or Levofloxacin supplier for your needs.

Send us enquiries for free, and we will assist you in establishing a direct connection with your preferred Levofloxacin manufacturer or Levofloxacin supplier.

PharmaCompass also assists you with knowing the Levofloxacin API Price utilized in the formulation of products. Levofloxacin API Price is not always fixed or binding as the Levofloxacin Price is obtained through a variety of data sources. The Levofloxacin Price can also vary due to multiple factors, including market conditions, regulatory modifications, or negotiated pricing deals.

API | Excipient name

Levofloxacin

Synonyms

100986-85-4, Levaquin, Quixin, (-)-ofloxacin, Cravit, Iquix

Cas Number

100986-85-4

Unique Ingredient Identifier (UNII)

RIX4E89Y14

About Levofloxacin

The L-isomer of Ofloxacin.

Oftaquix Manufacturers

A Oftaquix manufacturer is defined as any person or entity involved in the manufacture, preparation, processing, compounding or propagation of Oftaquix, including repackagers and relabelers. The FDA regulates Oftaquix manufacturers to ensure that their products comply with relevant laws and regulations and are safe and effective to use. Oftaquix API Manufacturers are required to adhere to Good Manufacturing Practices (GMP) to ensure that their products are consistently manufactured to meet established quality criteria.

click here to find a list of Oftaquix manufacturers with USDMF, JDMF, KDMF, CEP, GMP, COA and API Price related information on PhamaCompass.

Oftaquix Suppliers

A Oftaquix supplier is an individual or a company that provides Oftaquix active pharmaceutical ingredient (API) or Oftaquix finished formulations upon request. The Oftaquix suppliers may include Oftaquix API manufacturers, exporters, distributors and traders.

click here to find a list of Oftaquix suppliers with USDMF, JDMF, KDMF, CEP, GMP, COA and API Price related information on PharmaCompass.

Oftaquix USDMF

A Oftaquix DMF (Drug Master File) is a document detailing the whole manufacturing process of Oftaquix active pharmaceutical ingredient (API) in detail. Different forms of Oftaquix DMFs exist exist since differing nations have different regulations, such as Oftaquix USDMF, ASMF (EDMF), JDMF, CDMF, etc.

A Oftaquix DMF submitted to regulatory agencies in the US is known as a USDMF. Oftaquix USDMF includes data on Oftaquix's chemical properties, information on the facilities and procedures used, and details about packaging and storage. The Oftaquix USDMF is kept confidential to protect the manufacturer’s intellectual property.

click here to find a list of Oftaquix suppliers with USDMF on PharmaCompass.

Oftaquix JDMF

The Pharmaceuticals and Medical Devices Agency (PMDA) established the Japan Drug Master File (JDMF), also known as the Master File (MF), to permit Japanese and foreign manufacturers of drug substances, intermediates, excipients, raw materials, and packaging materials (‘Products’) to voluntarily register confidential information about the production and management of their products in Japan.

The Oftaquix Drug Master File in Japan (Oftaquix JDMF) empowers Oftaquix API manufacturers to present comprehensive information (e.g., production methods, data, etc.) to the review authority, i.e., PMDA (Pharmaceuticals & Medical Devices Agency).

PMDA reviews the Oftaquix JDMF during the approval evaluation for pharmaceutical products. At the time of Oftaquix JDMF registration, PMDA checks if the format is accurate, if the necessary items have been included (application), and if data has been attached.

click here to find a list of Oftaquix suppliers with JDMF on PharmaCompass.

Oftaquix KDMF

In Korea, the Ministry of Food and Drug Safety (MFDS) is in charge of regulating pharmaceutical products and services.

Pharmaceutical companies submit a Oftaquix Drug Master File in Korea (Oftaquix KDMF) to the MFDS, which includes comprehensive information about the production, processing, facilities, materials, packaging, and testing of Oftaquix. The MFDS reviews the Oftaquix KDMF as part of the drug registration process and uses the information provided in the Oftaquix KDMF to evaluate the safety and efficacy of the drug.

After submitting a Oftaquix KDMF to the MFDS, the registered manufacturer can provide importers or distributors with the registration number without revealing confidential information to Korean business partners. Applicants seeking to register their Oftaquix API can apply through the Korea Drug Master File (KDMF).

click here to find a list of Oftaquix suppliers with KDMF on PharmaCompass.

Oftaquix WC

A Oftaquix written confirmation (Oftaquix WC) is an official document issued by a regulatory agency to a Oftaquix manufacturer, verifying that the manufacturing facility of a Oftaquix active pharmaceutical ingredient (API) adheres to the Good Manufacturing Practices (GMP) regulations of the importing country. When exporting Oftaquix APIs or Oftaquix finished pharmaceutical products to another nation, regulatory agencies frequently require a Oftaquix WC (written confirmation) as part of the regulatory process.

click here to find a list of Oftaquix suppliers with Written Confirmation (WC) on PharmaCompass.

Oftaquix NDC

National Drug Code is a comprehensive database maintained by the FDA that contains information on all drugs marketed in the US. This directory includes information about finished drug products, unfinished drug products, and compounded drug products, including those containing Oftaquix as an active pharmaceutical ingredient (API).

Finished drug products

The FDA updates the NDC directory daily. The NDC numbers for Oftaquix API and other APIs are published in this directory by the FDA.

Unfinished drugs

The NDC unfinished drugs database includes product listing information submitted for all unfinished drugs, such as active pharmaceutical ingredients (APIs), drugs intended for further processing and bulk drug substances for compounding.

Pharmaceutical companies that manufacture Oftaquix as an active pharmaceutical ingredient (API) must furnish the FDA with an updated record of all drugs that they produce, prepare, propagate, compound, or process for commercial distribution in the US at their facilities.

Compounded drug products

The NDC directory also contains data on finished compounded human drug products that contain Oftaquix and are produced by outsourcing facilities. While these outsourcing facilities are not mandated to assign a Oftaquix NDC to their finished compounded human drug products, they may choose to do so.

click here to find a list of Oftaquix suppliers with NDC on PharmaCompass.

Oftaquix GMP

Oftaquix Active pharmaceutical ingredient (API) is produced in GMP-certified manufacturing facility.

GMP stands for Good Manufacturing Practices, which is a system used in the pharmaceutical industry to make sure that goods are regularly produced and monitored in accordance with quality standards. The FDA’s current Good Manufacturing Practices requirements are referred to as cGMP or current GMP which indicates that the company follows the most recent GMP specifications. The World Health Organization (WHO) has its own set of GMP guidelines, called the WHO GMP. Different countries can also set their own guidelines for GMP like China (Chinese GMP) or the EU (EU GMP).

PharmaCompass offers a list of Oftaquix GMP manufacturers, exporters & distributors, which can be sorted by USDMF, JDMF, KDMF, CEP (COS), WC, API price, and more, enabling you to easily find the right Oftaquix GMP manufacturer or Oftaquix GMP API supplier for your needs.

Oftaquix CoA

A Oftaquix CoA (Certificate of Analysis) is a formal document that attests to Oftaquix's compliance with Oftaquix specifications and serves as a tool for batch-level quality control.

Oftaquix CoA mostly includes findings from lab analyses of a specific batch. For each Oftaquix CoA document that a company creates, the USFDA specifies specific requirements, such as supplier information, material identification, transportation data, evidence of conformity and signature data.

Oftaquix may be tested according to a variety of international standards, such as European Pharmacopoeia (Oftaquix EP), Oftaquix JP (Japanese Pharmacopeia) and the US Pharmacopoeia (Oftaquix USP).

Inform the supplier about your product requirements, specifying if you need a product with particular monograph like EP (Ph. Eur.), USP, JP, BP, or any other quality. In addition, clarify whether you need hydrochloride (HCl), anhydricum, base, micronisatum or a specific level of purity. To find reputable suppliers, utilize the filters and select those certified by GMP, FDA, or any other certification as per your requirement.
For your convenience, we have listed synonyms and CAS numbers to help you find the best supplier. The use of synonyms and CAS numbers can be helpful in identifying potential suppliers, but it is crucial to note that they might not always indicate the exact same product. It is important to confirm the product details with the supplier before making a purchase to ensure that it meets your requirements.
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