A composition comprising a salt, a polymer, and an antioxidant. The dispenser is a flexible container having a closed end and an opposed open end, and an osmotically effective solute composition that encapsulates at least a portion of the container, wherein the solute composition comprises: A solute composition comprising an antioxidant in an amount of at least 0.5% by weight based on the weight, a semipermeable membrane encapsulating an osmotically effective solute composition, and the open end of the container. A cap having a sealing surface adapted for locking engagement, and a hole extending through the cap from the inside of the container. Also disclosed are methods of making and using the compositions and osmotic pumps. [Selection] Figure 2塩と、ポリマーと、抗酸化剤とを含む組成物。分注器は、閉鎖端部及び対向する開放端部を有する可撓性容器と、該容器の少なくとも一部を包封する浸透圧的に有効な溶質組成物であって、該溶質組成物の重量に基づき少なくとも０．５重量％の量で抗酸化剤を含む、溶質組成物と、浸透圧的に有効な溶質組成物を包封する半透性膜と、容器の開放端部との封止係合に適合された封止面を有するキャップと、容器の内側からキャップを通して延在する孔と、を含む。該組成物及び浸透圧ポンプを作製及び使用する方法も開示される。【選択図】図２
