PROBLEM TO BE SOLVED: To provide a liquid composition of an acid-labile drug.SOLUTION: The liquid composition includes: micro-granules comprising an acid-labile drug coated with an enteric coating and a liquid vehicle having a pH less than 6.0. The components of the composition are separately provided in the form of kits. Proton pump inhibitors, in particular Lansoprazole (R), are referred to as the acid-labile drugs.COPYRIGHT: (C)2012,JPO&INPIT【課題】酸不安定性薬物の液体組成物の提供。【解決手段】腸溶性コーティングを被せた酸不安定性薬物を含む微粒子及び6.0未満のpHを有する液体ビヒクルを含み、前記組成物の成分は別々のキットの形態である組成物。さらに、酸不安定性薬物がプロトンポンプ阻害剤であり、特にランソプラゾール(登録商標)である液体組成物。【選択図】なし