Pharmacokinetic interaction between ketoconazole and amprenavir after single doses in healthy men.
Pharmacotherapy
; 19(12): 1378-84, 1999 Dec.
Article
em En
| MEDLINE
| ID: mdl-10600086
ABSTRACT
STUDY OBJECTIVE:
To determine the effects of coadministration of amprenavir and ketoconazole on the pharmacokinetics of both drugs, and to assess the utility of the erythromycin breath test (ERMBT) to predict and explain these effects.DESIGN:
Open-label, randomized, balanced, single-dose, three-period crossover study.SETTING:
University research center.SUBJECTS:
Twelve healthy men. INTERVENTION Subjects received amprenavir 1200 mg, ketoconazole 400 mg, and amprenavir 1200 mg plus ketoconazole 400 mg. Each treatment was separated by 14 days. MEASUREMENTS AND MAINRESULTS:
Serial plasma samples for amprenavir and ketoconazole concentrations were measured by high-performance liquid chromatography. Coadministration of the drugs increased amprenavir area under the curve extrapolated to infinity (AUCinfinity) by 31% and reduced its maximum concentration (Cmax) by 16%. Amprenavir increased the AUCinfinity of ketoconazole by 44% and increased the drug's half-life and Cmax by 23% and 19%, respectively. Both agents resulted in substantial inhibition of ERMBT.CONCLUSION:
Coadministration of ketoconazole and amprenavir results in a statistically significant increase in AUC for both agents, but the changes are not likely to be clinically important.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sulfonamidas
/
Inibidores da Protease de HIV
/
Cetoconazol
/
Antifúngicos
Tipo de estudo:
Clinical_trials
/
Prognostic_studies
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Ano de publicação:
1999
Tipo de documento:
Article