Ranitidine Cmax and AUC0-infinity were decreased by approximately 50% and 45%, respectively, by a 5 g dose of sorbitol in human volunteers. Effect shown to be dose dependant; bioequivalence wasshown at a 1.25 g dose of sorbitol (although Cmax was reduced by∼7%), and formulations were not bioequivalent at 2.25 g or 5 g sorbitol doses. Sorbitol (5 g) also reduced metoprolol Cmax by 23% but had no significant effect on AUC0-infinity in a human BE study.