<prompt> All are side effects of phenytoin, EXCEPTAtaxiaHypoglycemiaHirsutismGum hypertrophy  <response>: B Hypoglycemia Dosage and Adverse Effects of Commonly Used Antiepileptic Drugs Phenytoin diphenylhydantoin Principal Uses -- Tonic-clonic grand mal; Focal-onset Typical Dose; Dose Interval-- 300-400 mgd 3-6 mgkg, adult; 4-8 mgkg, child; qd-bid Half-Life -- 24 h wide variation, dose dependent Therapeutic Range -- 10-20 pgmL Adverse EffectsNeurologic -- Dizziness Diplopia Ataxia Incoordination Confusion Adverse EffectsSystemic -- Gum hyperplasia Lymphadenopathy Hirsutism Osteomalacia Facial coarsening Skin rash Adverse interactions -- Level increased by isoniazid, sulfonamides, fluoxetine Level decreased by enzyme inducing drugs Altered folate metabolism 