Primidone
Mysoline (primidone) is a prescription anticonvulsant medication used to control various types of epileptic seizures, including grand mal, psychomotor, and focal seizures. It is typically prescribed when other seizure medications have not been fully effective.
Mysoline is an anticonvulsant medication used to prevent and control epileptic seizures.
Key facts at a glance
- RxNorm
- 203011
- Generic
- Mysoline
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Mysoline is primarily prescribed to treat epilepsy and control seizure disorders, including grand mal (tonic-clonic) seizures, focal (partial) seizures, and myoclonic seizures. It may be used as a standalone treatment or in combination with other anticonvulsant medications.
Mysoline is converted in the body to phenobarbital and phenylethylmalonamide (PEMA). It works by suppressing abnormal electrical activity in the brain and increasing the threshold for seizure activity, thereby helping to prevent the spread of seizure activity in the brain.
Mysoline should not be stopped abruptly as this may increase seizure frequency. Common side effects may include drowsiness, dizziness, and coordination difficulties. Regular blood monitoring may be required during treatment. Alcohol should be avoided as it can increase drowsiness and dizziness. Patients should inform their doctor of all other medications being taken due to potential drug interactions.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy