Answer
Do not stop it without specialist advice because blood phenylalanine may rise above pretreatment levels and monitoring or dietary changes may be needed.
Sources for this answer
- Sapropterin Dihydrochloride 100mg Soluble Tablets — Current selected SmPCemc · Summary of Product Characteristics
- Sapropterin Dihydrochloride 100 mg powder for oral solution — Current selected SmPCemc · Summary of Product Characteristics