<prompt> With chronic use in seizure state, the adverse effects of this drug include coarsening of facial features, hirsutism gingival hyperplasia and osteomalacia:EthosuccimideCarbomazepineGabapentinPhenytoin  <response>: Gum hyperophy: Commonest b Hirsutism, coarsening of facial features troublesome in young girls, acne. REF:KD TRIPATHI 8TH ED. 