Antacids have no influence on the pharmacokinetics of rabeprazole, a new proton pump inhibitor, in healthy volunteers.

  • 1 May 1999
    • journal article
    • clinical trial
    • Vol. 37  (5) , 249-53
Abstract
This randomized, open-label, crossover study was conducted to evaluate the effect of a single dose of antacid, aluminum and magnesium hydroxide suspension, on pharmacokinetics of rabeprazole in healthy male volunteers. Twelve subjects were randomly divided into 6 groups of 2 subjects each, and received 20 mg of rabeprazole either without antacid, concomitantly with antacid, or one hour after administration of antacid in three experimental arms with washout period of one week. The concentrations of rabeprazole in plasma were determined by high performance liquid chromatography. Rabeprazole was well tolerated at the 20 mg dose level when given with or without antacid. The pharmacokinetic parameters, Cmax, t(max), AUC and t1/2, showed no statistically significant differences when rabeprazole was administered alone, concomitantly with antacid or one hour after antacid administration. No influence of single dose of antacid on pharmacokinetics of rabeprazole was observed.

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