健けん胃い剤ざいけんいざいMeanings1nounstomachic; stomach medicinemedicineMedical term for a medicine that aids digestion or soothes the stomach. Often used in pharmacy contexts.See also: 健胃薬この健けん胃い剤ざいは食しょく前ぜんに飲のむと効こう果か的てきです。This stomach medicine is effective when taken before meals.