Effects of omeprazole on plasma levels of raltegravir.

Iwamoto, Marian; Wenning, Larissa A; Nguyen, Bach-Yen; Teppler, Hedy; Moreau, Allison R; Rhodes, Rand R; Hanley, William D; Jin, Bo et al. · Clin Infect Dis · 2009

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Abstract

Raltegravir, a human immunodeficiency virus type 1 (HIV-1) integrase inhibitor, has pH-dependent solubility. Raltegravir plasma concentration increases with omeprazole coadministration in healthy subjects; this is likely secondary to an increase in bioavailability attributable to increased gastric pH. Increased gastric pH has been reported in HIV-1-infected individuals, and the effects of omeprazole in this intended population may be diminished. Further investigation is necessary.

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