Meloxicam is a new enol carboxamide nonsteroidal antiinflammatory drug
(NSAID). Preclinical studies have indicated that it possesses a high
antiinflammatory potency and a low ulcerogenic potency. This open, ran
domized, crossover study was conducted to examine the effects of aspir
in, the antacid Maalox (Rhone-Poulenc Rorer, Cologne, Germany), and ci
metidine on the pharmacokinetics and bioavailability of a single oral
dose of meloxicam 30 mg in healthy male volunteers. Plasma concentrati
ons of meloxicam were determined and subjected to noncompartmental pha
rmacokinetic analysis. Meloxicam was well tolerated, and concomitant t
reatment with cimetidine or Maalox had little or no effect on the plas
ma concentration-time curves, maximum plasma concentration (C-max), or
the area under the plasma concentration-time curve (AUC(0-infinity))
of meloxicam. Concurrent treatment with aspirin increased plasma conce
ntrations of meloxicam, increasing C-max by approximately 25% and AUC(
0-infinity) by 10%. These differences were not considered to be clinic
ally relevant, and no adjustments of meloxicam dose should be required
with coadministration of aspirin, Maalox, or cimetidine.