About ethosuximide
Succinimide antiseizure medicine
Used for
- Treatment of absence seizures.
Usual adult dose
Usually 500 mg daily initially; increase gradually. Usual dose is 1,000–1,500 mg daily, divided if needed.
Usual dose in children
Usually 10–15 mg/kg daily initially; increase gradually. Usual dose is 20 mg/kg daily, up to 40 mg/kg.
Common side effects
- Nausea, vomiting, stomach pain, or loss of appetite
- Sleepiness, dizziness, headache, or impaired coordination
- Mood changes or unusual behavior
- Rarely, serious rash or blood-cell disorders
Important warnings
- Do not stop suddenly; seizures may worsen.
- Seek urgent care for severe rash, fever, sore throat, unusual bruising, or suicidal thoughts.
- Dose adjustments may be needed with kidney or liver problems.
- Regular clinical and blood monitoring may be recommended.
Pregnancy
May harm an unborn baby. Pregnancy planning and treatment require specialist review; do not stop suddenly.
Breastfeeding
Ethosuximide enters breast milk. The infant may need monitoring for sleepiness, poor feeding, or inadequate weight gain.
Interactions
- Valproate can increase ethosuximide levels.
- Some antiseizure medicines can change ethosuximide levels.
- Alcohol and sedating medicines may worsen drowsiness.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.