An object of the present invention is to provide a prostaglandin-containing product, wherein when an aqueous liquid preparation containing a prostaglandin derivative having at least a fluorine atom in its molecule as an active ingredient is stored in a resin container subjected to a sterilization treatment, a decrease in the content of the prostaglandin derivative in the aqueous liquid preparation can be inhibited. The aqueous liquid preparation containing the prostaglandin derivative having at least a fluorine atom in its molecule as an active ingredient is stored in the resin container subjected to a sterilization treatment with ethylene oxide gas. By doing this, a decrease in the content of the prostaglandin derivative in the aqueous liquid preparation can be inhibited.
