The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Headache (15%)
- Runny nose (11%)
- Throat pain (10%)
- Diarrhea (8%)
- Vomiting (8%)
- Cough (7%)
- Stuffy nose (4%)
Less Common Side Effects
- Low blood Phe levels
- Rhinitis
- Stomach pain
Sapropterin serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Severe allergic reaction: rash, trouble breathing, swelling of the lips, tongue, or throat
- Severe stomach problems: stomach pain, nausea, vomiting, blood in vomit or stool, black tarry stools, trouble swallowing, loss of appetite, throat pain
Source: DailyMed
The following Sapropterin side effects have also been reported
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
More common
Incidence not known
Burning feeling in the chest or stomach
difficulty with swallowing
dizziness
fast heartbeat
fidgeting or moving around too much
indigestion
pain or burning in the throat
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
sores, ulcers, or white spots on lips or tongue or inside the mouth
stomach upset
talking too much
tenderness in the stomach area
tightness in the chest
trouble swallowing
unusual tiredness or weakness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Less common
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
