Primidone

Pronounced PRIM-i-done

Brand names: Mysoline

Type: Barbiturate antiseizure medicine · All Neurology Medicines

What Primidone is used for

  • Seizure disorders
  • Essential tremor

Common side effects

  • Drowsiness
  • Dizziness
  • Unsteadiness
  • Nausea

Important cautions

  • The body converts it partly to phenobarbital, so it shares barbiturate cautions including dependence and many interactions
  • First amounts commonly cause strong dizziness that eases over days

How it comes

Tablets. This guide lists forms only — it never lists strengths or doses.

Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.