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Mysoline
Primidone
$153.00
250mg · 9 × 30 tablets · 3 months supply
GenericGeneric medicine· By Rekah
$51.00 per month
How long a supply?
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Annual cost
$629a year at this pack size
Prescription required
Upload your prescription after ordering, or send it to our pharmacy team. We dispense only against a valid prescription.
About Mysoline
Overview
Mysoline is a prescription medicine containing primidone, an anticonvulsant used to control seizures. It treats grand mal, psychomotor and focal epileptic seizures, either alone or with other anticonvulsants. It may also help control grand mal seizures that have not responded to other anticonvulsant treatment.
What it treats
- Grand mal seizures, including those not controlled by other anticonvulsant treatment - Psychomotor seizures - Focal epileptic seizures
Safety information
Side effects
The most common early side effects are problems with balance and coordination and a spinning sensation (vertigo). Other reported side effects include nausea, loss of appetite, vomiting, tiredness, drowsiness, irritability, emotional changes, difficulty getting or keeping an erection, double vision, involuntary eye movements and a measles-like rash. Rare but serious side effects include very low white blood cell counts, reduced or absent red blood cell production, and megaloblastic anemia, a condition involving abnormal red blood cells. Contact your doctor if you develop a blood disorder or have persistent or severe side effects, as these may require stopping treatment under medical supervision.
When to call your doctor
If symptoms are severe or getting worse quickly, seek emergency care rather than waiting.
Before taking this medicine
Do not take Mysoline (primidone) if you have porphyria or are allergic to phenobarbital.
Using Mysoline
Dosing
Dosing is set by your prescriber. Each health care professional may prescribe medication differently according to a patient's medical history and condition, so follow the directions on your prescription label and speak to your doctor or pharmacist before changing anything.
Storage
Store below 25°C in a dry place, in the original pack, away from direct light and moisture. Do not keep it in a bathroom. Keep all medicines out of the sight and reach of children.
Clinical information on this page is summarised from the US FDA label PRIMIDONE TABLET [NCS HEALTHCARE OF KY, LLC DBA VANGARD LABS] (DailyMed, retrieved 19 September 2026).
Patient information and references
Official and supporting information to read alongside advice from your prescriber or pharmacist.
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