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The American journal of medicine

Overview of the pharmacokinetics of fleroxacin.


PMID 8452184

Abstract

The pharmacokinetic properties of fleroxacin in relation to other quinolones are presented. Fleroxacin, like all quinolones, is well absorbed, reaching peak concentrations within 2 hours. Interactions with Ca2+ and Al3+ are minimal and possibly of little clinical importance. The drug is eliminated via filtration in the kidney. It is therefore sensitive to changes in renal function. Accumulation of drug in the body is minimal, and change from intravenous to oral dosing results in nearly identical serum concentrations. Aside from the modest effect of metals on its absorption, fleroxacin does not interact/compete with substances oxidized in the liver, such as theophylline, and drug interactions are minimal. Its long serum half-life (8-12 hours) allows once-a-day dosing. This feature, along with its modest drug interactions, makes fleroxacin an attractive quinolone, at least with respect to its pharmacokinetics.

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