The present invention provides: a pitavastatin-containing preparation containing pitavastatin or a pharmacologically acceptable salt thereof and at least one kind of a basic additive selected from the group consisting of basic magnesium compounds and basic calcium compounds, and an aqueous solution or an aqueous dispersion of the pitavastatin-containing preparation having a pH of more than 8 and 10 or less; and a method for producing a pitavastatin-containing preparation, including blending at least one kind of a basic additive selected from the group consisting of basic magnesium compounds and basic calcium compounds with pitavastatin or a pharmacologically acceptable salt thereof, to make an aqueous solution or an aqueous dispersion of the pitavastatin-containing preparation have a pH of more than 8 and 10 or less.