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Pharmacokinetics of Levofloxacin in Comparison to the Racemic Mixture of Ofloxacin in Man

Pharmacokinetics of Levofloxacin in Comparison to the Racemic Mixture of Ofloxacin in Man M. Verho1, V. Malerczyk2, D. Damm3 and K.-H. Lehr3 'Clinical Research, 2Clinical Research/Biometrics, 3 Department of Pharma Research, Biochemistry, Hoechst AG, D-65926 Frankfurt, Germany SUMMARY After oral administration of a single dose of 200 mg of levofloxacin and 400 mg racemic mixture of ofloxacin to 6 healthy male volunteers in a double-blind, randomised cross-over study, concentrations of the unchanged isomers were determined at various times in serum and urine, over 28 hours and 48 hours, respectively. Each dosing was followed by a wash-out period of one week. Ofloxacin concentrations were determined using an enantioselective and a non-enantioselective high pressure liquid chromatography (HPLC) assay. The two measurements obtained were compared by linear distribution independent regression, and were found to be equivalent. Maximum serum concentration (Cmax) of levofloxacin after the administration of 200 mg of the levo-isomer was 2.42 mg/1 (chiral derivatization HPLC, mean values); the corresponding area under the serum concentration-time curve (AUCo-28) was 17.0 mg χ Μ. The corresponding C m a x values after the administration of 400 mg (±)isomer (chiral derivatization HPLC and reversed phased HPLC, mean values) were 2.05 mg/1, 1.98 mg/1 and 4.41 mg/1 for (-)-, (+)- and (±) isomer, respectively. The AUCso-28 were http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Drug Metabolism and Drug Interactions de Gruyter

Pharmacokinetics of Levofloxacin in Comparison to the Racemic Mixture of Ofloxacin in Man

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References (21)

Publisher
de Gruyter
Copyright
Copyright © 1996 by the
ISSN
2191-0162
eISSN
2191-0162
DOI
10.1515/DMDI.1996.13.1.57
Publisher site
See Article on Publisher Site

Abstract

M. Verho1, V. Malerczyk2, D. Damm3 and K.-H. Lehr3 'Clinical Research, 2Clinical Research/Biometrics, 3 Department of Pharma Research, Biochemistry, Hoechst AG, D-65926 Frankfurt, Germany SUMMARY After oral administration of a single dose of 200 mg of levofloxacin and 400 mg racemic mixture of ofloxacin to 6 healthy male volunteers in a double-blind, randomised cross-over study, concentrations of the unchanged isomers were determined at various times in serum and urine, over 28 hours and 48 hours, respectively. Each dosing was followed by a wash-out period of one week. Ofloxacin concentrations were determined using an enantioselective and a non-enantioselective high pressure liquid chromatography (HPLC) assay. The two measurements obtained were compared by linear distribution independent regression, and were found to be equivalent. Maximum serum concentration (Cmax) of levofloxacin after the administration of 200 mg of the levo-isomer was 2.42 mg/1 (chiral derivatization HPLC, mean values); the corresponding area under the serum concentration-time curve (AUCo-28) was 17.0 mg χ Μ. The corresponding C m a x values after the administration of 400 mg (±)isomer (chiral derivatization HPLC and reversed phased HPLC, mean values) were 2.05 mg/1, 1.98 mg/1 and 4.41 mg/1 for (-)-, (+)- and (±) isomer, respectively. The AUCso-28 were

Journal

Drug Metabolism and Drug Interactionsde Gruyter

Published: Sep 1, 1996

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