Medicinal compositions retarded in the discoloration of phenolic hydroxyl compounds

摘要

Coloring change of a pharmaceutical composition containing a compound having a phenolic hydroxyl group, such as an anti-inflammatory agent or an antioxidant having a phenolic hydroxyl group or the compound of formula (I) can be controlled by adding an acid. The present invention provides a pharmaceutical composition containing a compound having a phenolic hydroxyl group and an acid in which coloring change is controlled.