Overview Efficacy of TAK-438 Compared to AG-1749 (Lansoprazole) in the Treatment of Gastric Ulcer Status: Completed Trial end date: 2012-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to investigate the efficacy of TAK-438, once daily (QD), compared to lansoprazole in patients with gastric ulcer. Phase: Phase 3 Details Lead Sponsor: TakedaTreatments: DexlansoprazoleLansoprazole