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Drug Metab Dispos. 1990 Nov-Dec;18(6):954-7.

Ciprofloxacin does not impair the elimination of diazepam in humans.

Author information

1
Department of Pulmonary Diseases, Foundation of Deventer Hospitals, The Netherlands.

Abstract

The pharmacokinetics of a single iv dose of 10 mg diazepam and the renal excretion of its metabolites resulting from N-demethylation and C-3-hydroxylation were investigated in 10 healthy volunteers when diazepam was administered alone and on day 3 of administration of the fluoroquinolone ciprofloxacin (500 mg twice per day). No significant changes in the diazepam half-life, its volume of distribution, the total body clearance, or the renal clearance were observed. In addition, the renal excretion of the metabolites desmethyldiazepam, 3-hydroxydiazepam (temazepam), and 3-hydroxydesmethyldiazepam (oxazepam) were not altered by ciprofloxacin co-medication. These data demonstrate that in a 500 mg twice per day oral dosage, ciprofloxacin does not influence the metabolic clearance of diazepam in young healthy volunteers.

PMID:
1981543
[Indexed for MEDLINE]

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