PROBLEM TO BE SOLVED: To provide a formulation excellent in preservation stability and improved solubility.SOLUTION: The formulation contains an active ingredient, a crosslinked polymer of vinylpyrrolidone and edible oil. The active ingredient comprises at least one compound selected from the group consisting of benfotiamine, riboflavin, riboflavin butyric acid ester, riboflavin sodium phosphate, pyridoxine hydrochloride, pyridoxal phosphate, processed garlic, cyanocobalamin, hydroxocobalamin, hydroxocobalamin acetate, hydroxocobalamin hydrochloride and ascorbic acid.
