With chronic use in seizure state, the adverse effects of this drug include coarsening of facial features, hirsutism gingival hyperplasia and osteomalacia:
Gum hyperophy: Commonest ( (b) Hirsutism, coarsening of facial features (troublesome in young girls), acne. REF:KD TRIPATHI 8TH ED.
Ethosuccimide
Carbomazepine
Gabapentin
Phenytoin
Central Nervous system