Sapropterin dihydrochloride powder for oral solution is a phenylalanine hydroxylase activator indicated to reduce blood phenylalanine (Phe) levels in adult and pediatric patients one month of age and older with
hyperphenylalaninemia (HPA) due to tetrahydrobiopterin- (BH4-) responsive Phenylketonuria (PKU). Sapropterin dihydrochloride powder for oral solution is to be used in conjunction with a Phe-restricted diet. (1)