PROBLEM TO BE SOLVED: To provide a patch for external use having excellent percutaneous absorbability of a medicament, high safety for skin, excellent stability of the medicament in a pressure-sensitive adhesive base, and good developing properties of pharmaceutical effects in the patch for external use including loxoprofen or an alkali addition salt thereof.SOLUTION: The patch for external use includes the loxoprofen or alkali addition salt thereof in the pressure-sensitive adhesive base. In the patch for external use, a thermoplastic elastic body, a tackifier, an aliphatic hydroxy acid and a higher fatty acid are contained as a base ingredient of the adhesive base.COPYRIGHT: (C)2011,JPO&INPIT【課題】ロキソプロフェン又はそのアルカリ付加塩を含有する外用貼付剤において、薬物の経皮吸収性に優れ、皮膚に対する安全性が高く、且つ粘着基剤中での薬物の安定性に優れ薬効発現性の良好な外用貼付剤を提供すること。【解決手段】粘着基剤中にロキソプロフェン又はそのアルカリ付加塩を含有する外用貼付剤において、前記粘着基剤の基剤成分として熱可塑性弾性体、粘着付与剤、脂肪族ヒドロキシ酸及び高級脂肪酸を含有することを特徴とする外用貼付剤。【選択図】 図1