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
Dravet syndrome
- Poor appetite (up to 49%)
- Diarrhea (up to 31%)
- Feeling tired or unwell (up to 30%)
- Drowsiness or lack of energy (up to 26%)
- Upper respiratory tract infection (up to 21%)
- Fever (up to 21%)
Lennox-Gastaut syndrome
- Poor appetite (up to 36%)
- Feeling tired or unwell (up to 24%)
- Drowsiness or lack of energy (up to 22%)
- Vomiting (up to 14%)
- Diarrhea (up to 13%)
- Upper respiratory tract infection (up to 8%)
Less Common Side Effects
- Constipation
- Weight loss
- Poor balance and coordination
- Weak muscle tone
- Tremor or feeling shaky
- Abnormal behavior
- Irritability
- Higher blood pressure
- Drooling
- Ear infection
Fintepla serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Lung or heart valve problems: difficulty breathing, tiredness, dizziness, chest pain, heart racing, swollen ankles, bluish-colored lips or skin
- Serotonin syndrome: fast heart rate, sweating, muscle stiffness or spasms, fever, confusion
- Suicidal thoughts or behavior
Source: DailyMed
The following Fintepla side effects have also been reported
Side effects that you should report to your care team as soon as possible:
- Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
- Heart valve disease—shortness of breath, chest pain, unusual weakness or fatigue, dizziness, feeling faint or lightheaded, fever, sudden weight gain, fast or irregular heartbeat
- Increase in blood pressure
- Irritability, confusion, fast or irregular heartbeat, muscle stiffness, twitching muscles, sweating, high fever, seizure, chills, vomiting, diarrhea, which may be signs of serotonin syndrome
- Pulmonary arterial hypertension (PAH)—shortness of breath, unusual weakness or fatigue, swelling of the ankles, hands, or feet, dizziness, feeling faint or lightheaded, chest pain, fast or irregular heartbeat, blue skin or lips
- Sudden eye pain or change in vision such as blurry vision, seeing halos around lights, vision loss
- Thoughts of suicide or self-harm, worsening mood, feelings of depression
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
- Constipation
- Diarrhea
- Dizziness
- Drowsiness
- Loss of appetite with weight loss
- Loss of balance or coordination
- Unusual weakness or fatigue
- Vomiting
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