PROBLEM TO BE SOLVED: To provide a preservation method using a pharmaceutical product wrapping material by completely removing residual oxygen in a packaging body that is impossible in the normal packaging without changing pharmaceutical compositions and having any problem even in combined use with desiccant, in preservation of pharmaceutical products and test pieces affected by oxygen and moisture.SOLUTION: A preservation method of pharmaceutical products is characterized by sealing up the pharmaceutical products by using a functional multilayer packaging body. The preservation method of the pharmaceutical products is characterized by sealing the pharmaceutical products by using the functional multilayer packaging body having an innermost layer comprising a thermoplastic resin, a functional layer comprising a thermoplastic resin composition with a free-oxygen absorber or desiccant blended alone or used together, respectively, and a barrier layer comprising a gas barrier resin sequentially from the inside provided to the functional multilayer packaging body.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】酸素及び水分の影響を受ける医薬品及び試験片の保存において、薬剤組成を変更することなく、通常の包装では不可能な包装体内残存酸素を完全に除去し、乾燥剤との併用でも問題ない医薬品包装材料を用いた保存方法を提供する。【解決手段】医薬品類を機能性多層包装体を使用して密封することを特徴とする医薬品類の保存方法であり、機能性多層包装体が、内側より順に熱可塑性樹脂からなる最内層、脱酸素剤もしくは乾燥剤をそれぞれ単独もしくは併用して配合した熱可塑性樹脂組成物からなる機能層、ガスバリア性樹脂からなるバリア層を持つ機能性多層包装体を使用して、密封することを特徴とする医薬品類の保存方法。【選択図】なし
