Overview TAK-438 Bismuth Drug Interaction Study Status: Completed Trial end date: 2017-05-11 Target enrollment: Participant gender: Summary To evaluate the safety, tolerability, and pharmacokinetics (PK) of quadruple therapy with bismuth, clarithromycin, amoxicillin, and TAK-438 versus quadruple therapy with bismuth, clarithromycin, amoxicillin, and lansoprazole. Phase: Phase 1 Details Lead Sponsor: TakedaTreatments: AmoxicillinBismuthClarithromycinDexlansoprazoleLansoprazole