Epilepsy Adult & childn >12 yr Initially 300 mg tid. May be increased up to 1,800 mg/day.
Childn 3-12 yr Initially 10-15 mg/kg/day in 3 divided doses,
≥5-12 yr 25-35 mg/kg/day in 3 divided doses,
3-4 yr 40 mg/kg/day in 3 divided doses.
Adult Postherpetic neuralgia Initially 300 mg once daily on the 1st day, 300 mg bid on the 2nd day & 300 mg tid on the 3rd day. May be increased up to total daily dose of 1,800 mg in 3 divided dose.
Diabetic neuropathy 900-3,600 mg daily.