Generic Name and Formulations:
Primidone 50mg, 250mg; scored tabs.
Bausch Health Companies Inc.
Indications for MYSOLINE:
Tonic-clonic, focal and psychomotor seizures.
Initially: 100–125mg at bedtime. Increase every 3 days if needed by 100–125mg daily to 3 times daily on day 7. On day 10, increase to 250mg 3 times daily; max 2g daily in divided doses.
<8yrs: initially 50mg at bedtime. On day 4, increase if needed to 50mg twice daily. On day 7, to 100mg twice daily. On day 10, to 125–250mg 3 times daily. Usual maintenance: 100–250mg 3 times daily or 10–25mg/kg/day in divided doses. ≥8yrs: as adult.
Porphyria. Barbiturate hypersensitivity.
Impaired liver function. Change dose gradually. Monitor blood counts, electrolytes. Pregnancy. Nursing mothers.
Potentiated with alcohol and other CNS depressants. Antagonizes oral anticoagulants and contraceptives, steroids, Vit. K and D, griseofulvin, doxycycline. Variable effects with phenytoin, valproic acid, divalproex. Potentiated by MAOIs. Antagonizes tricyclic antidepressants.
Drowsiness, ataxia, dizziness, nystagmus, neonatal hemorrhage and withdrawal, nausea, vomiting, rash, megaloblastic anemia sensitive to folic acid, emotional disorders, impotence.
Tabs 50mg—100, 500; 250mg—100, 1000