Primidone (Hexamidinum; list B) is an anticonvulsant drug. Is used for treatment of epilepsy, mainly of Grand Mal seizures. Higher doses: single 0.75 g daily 2, Sometimes primidone may cause drowsiness, headache, nausea, dermatitis, anemia, leukopenia. Contraindicated in diseases of the liver, kidneys and blood-forming organs. Method of production: powder and pills 0,125 and 0.25, Keep in dark place. Cm. also, anti-Convulsants.