PROBLEM TO BE SOLVED: To provide a method for preparing a monolayer liposome composition of a polyene antibiotic.SOLUTION: The present invention provides a method that comprises the steps of: forming a soluble complex of a polyene antibiotic and phospholipid in an acidified organic solvent and maintaining the soluble complex at a pH of 4.5 or less; removing the organic solvent to form a dried complex and hydrating the dried complex with an aqueous buffer solution to form a dispersion of monolayer liposomes containing the polyol antibiotic from a mixture resulted from the hydration; and subjecting the dispersion to filter sterilization. The method further includes an additional step of adding a buffer at a pH of 3 to 6 to the dispersion of monolayer liposomes prior to the step of the filter sterilization.SELECTED DRAWING: None【課題】ポリエン抗生物質薬の単層リポソーム組成物を調製するための方法の提供。【解決手段】酸性化有機溶媒中にポリエン抗生物質とリン脂質との可溶性複合体を形成し、前記可溶性複合体を4.5以下のpHで維持すること;前記有機溶媒を除去して、乾燥複合体を形成し、前記乾燥複合体を水性緩衝溶液で水和し、水和混合物から、前記ポリエン抗生物質を含有する単層リポソームの分散体を形成すること;前記分散体をろ過滅菌にかけることを含み、前記ろ過滅菌のステップの前に、3~6のpHを有する緩衝液を前記単層リポソームの分散体に添加する追加のステップを含む方法。【選択図】なし