Effects of acid-reducing agents on the pharmacokinetics of lopinavir/ritonavir and ritonavir-boosted atazanavir.

Abstract:

:A total of 71 HIV-negative healthy adults were randomized to 1 of 6 regimens to receive lopinavir/ritonavir tablets 400/100 mg twice daily (bid) or 800/200 mg once daily (qd) or atazanavir 300 mg + ritonavir 100 mg qd from study days 1 to 15 with a moderate-fat meal. One hour before breakfast, either omeprazole 40 mg qd was administered on study days 11 through 15, or a single dose of ranitidine 150 mg was administered on study day 11. Lopinavir, atazanavir, and ritonavir pharmacokinetics were determined on study days 10, 11, and 15 and compared using point estimates and 90% confidence intervals (CIs). The point estimates for lopinavir Cmax and AUCtau were in the range of 0.92 to 1.08, with 90% CI contained within the range of 0.80 to 1.25 after coadministration of omeprazole or ranitidine. The point estimates for atazanavir Cmax and AUCtau were decreased by 48% to 62% with the upper bound of the 90% CI

journal_name

J Clin Pharmacol

authors

Klein CE,Chiu YL,Cai Y,Beck K,King KR,Causemaker SJ,Doan T,Esslinger HU,Podsadecki TJ,Hanna GJ

doi

10.1177/0091270007313392

subject

Has Abstract

pub_date

2008-05-01 00:00:00

pages

553-62

issue

5

eissn

0091-2700

issn

1552-4604

pii

48/5/553

journal_volume

48

pub_type

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