Effect of Antacids and Ranitidine on the Single-Dose Pharmacokinetics of Fosamprenavir

AUTOR(ES)

Ford, Susan L.

FONTE

American Society for Microbiology

RESUMO

Single doses of MAALOX TC and ranitidine were administered separately with 1,400 mg of fosamprenavir (FPV). MAALOX TC decreased the area under the concentration-time curve from 0 to 24 h (AUC0-24) for plasma amprenavir (APV) by 18% and the maximum concentration of drug in serum (Cmax) by 35%; the plasma APV concentration at 12 h (C12) increased by 14%. Ranitidine at 300 mg decreased the AUC0-24 for plasma APV by 30% and Cmax by 51%; C12 was unchanged. FPV may be coadministered with antacids without concern and without separation in dosing; however, caution is recommended when FPV is coadministered with histamine2- receptor antagonists or proton pump inhibitors.

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