Overview Comparison of Prilosec OTC® Versus Zegerid® for Gastric Acid Suppression Status: Completed Trial end date: 2008-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to compare Prilosec OTC® and Zegerid® in their effects on gastric acid suppression. Phase: Phase 4 Details Lead Sponsor: Procter and GambleTreatments: OmeprazoleOmeprazole, sodium bicarbonate drug combination