In order to effect long-term stabilization of rapamycin contained in a liquid preparation, a sealed preparation container (1) according to the present invention comprises a sealed container body (2) in which is sealed a liquid preparation containing 2% (w/w) rapamycin or a salt thereof, 94% (w/w) polyethylene glycol, and 4% (w/w) ethanol, the volume of the sealed container body (2) being 0.1 to 1.0 mL, the liquid preparation not containing an antioxidant, and the total volume of the liquid preparation being 0.02 to 1.0 mL.以使液體製劑所含之雷帕黴素長期安定化為目的,本發明之製劑密封容器具備將包含2%(w/w)之雷帕黴素或其鹽、94%(w/w)之聚乙二醇、及4%(w/w)之乙醇的液體製劑密封之密封容器本體,前述密封容器本體之容量為0.1~1.0mL,前述液體製劑不含抗氧化劑,前述液體製劑之總容量為0.02~1.0mL。