The present invention provides a pharmaceutical product which includes a solid preparation comprising pitavastatin or a salt thereof, in which production of a lactone form thereof is suppressed. The pharmaceutical product is characterized by including a solid preparation comprising the following ingredients (A) and (B): (A) pitavastatin or a salt thereof and (B) at least one member selected from the group consisting of carmellose and a salt thereof, crospovidone, and microcrystalline cellulose, and the solid preparation having a water content of 2.9 mass% or less, wherein the solid preparation is stored in a tight package.
