Ethosuximide for epilepsy
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Examples
| Brand Name | Generic Name |
| Zarontin | ethosuximide |
Ethosuximide requires 2 to 3 oral doses per day.
How It Works
Ethosuximide reduces the type of brain activity associated with absence seizures.
Why It Is Used
Ethosuximide is one of the drugs of choice for children who have absence seizures.
Ethosuximide does not prevent any types of seizures other than absence seizures. Ethosuximide is sometimes used with other drugs to treat adults who have several types of generalized seizures.
How Well It Works
Ethosuximide is effective in preventing absence seizures in children and adults.1
Side Effects
Ethosuximide may cause stomach problems, including:
- Nausea and vomiting.
- Stomach cramps.
- Loss of appetite.
It may also cause headache, mild drowsiness, dizziness, and hiccups.
See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)
What To Think About
Ethosuximide is an effective drug with a fairly limited use. For people with absence seizures only, it can be a very good choice. It controls these seizures well and causes few side effects. Most people can tolerate ethosuximide quite well in the short term.
Long-term use of the drug is not common because it is not very effective for treating certain types of epilepsy common in adults.
It may take time and careful, controlled adjustments by you and your doctor to find the combination, schedule, and dosing of medicine to best manage your epilepsy. The goal is to prevent seizures while causing as few unwanted side effects as possible. After the most effective medicine program is determined, it is important that you follow it exactly as prescribed.
- Drug interactions Many medicines for epilepsy can interact with other medicines you may be taking. This means that your epilepsy medicine may not work as well, or it may affect the way another medicine you are taking works. Some of these interactions can be dangerous. It is important to tell your doctor about all the medicines, herbal pills, and dietary supplements you are taking.
- Risk of birth defects. All medicines for epilepsy have some risk of birth defects. But the risk of birth defects needs to be carefully compared to other risks to the baby if the mother stops taking her epilepsy medicine. If you are thinking about becoming pregnant, it is important to plan ahead and talk with your doctor about the benefits and risks of taking epilepsy medicine during your pregnancy. It you are already pregnant, it is not too late. The best thing to do is talk to your doctor about your pregnancy before you make any changes to the medicines you are taking.
- Other concerns. For some people, ethosuximide may produce side effects or carry risks that are not fully known yet. Report any unexpected side effects or problems to your doctor.
Complete the new medication information form (PDF) (What is a PDF document?) to help you understand this medication.
References
Citations
Blume WT (2003). Diagnosis and management of epilepsy. Canadian Medical Association Journal, 168(4): 441–448.
Credits
| Author | Monica Rhodes |
| Editor | Kathleen M. Ariss, MS |
| Associate Editor | Pat Truman, MATC |
| Primary Medical Reviewer | Michael J. Sexton, MD - Pediatrics |
| Specialist Medical Reviewer | Theresa O'Young, PharmD - Clinical Pharmacist |
| Specialist Medical Reviewer | Steven C. Schachter, MD - Neurology |
| Last Updated | October 29, 2007 |
| Last updated: | October 29, 2007 |
|---|---|
| Author: | Monica Rhodes |
| Reviewed By: | Michael J. Sexton, MD - Pediatrics, Steven C. Schachter, MD - Neurology |
| Editors: | Kathleen M. Ariss, MS, Pat Truman, MATC |
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