Epilepsy Adult & childn >12 yr
Usual dose: 900-1,800 mg/day given in divided doses tid. Initially 300 mg tid. Dose may be increased using 300 mg tid up to 1,800 mg/day. Childn
Initially 10-15 mg/kg/day in 3 divided doses & effective dose reached upward titration over a period of approx 3 days, 5-12 yr
25-35 mg/kg/day given in 3 divided doses, 3-12 yr
Dose up to 50 mg/kg/day, 3-4 yr
40 mg/kg/day given in 3 divided doses. Postherpetic neuralgia Adult & childn >12 yr
Usual dose: 900 mg/day given as 3 equally divided doses, may be increased based on response. Max: 3,600 mg/day. Initially 300 mg once daily on day 1, bid on day 2 & tid on day 3. Dose can be subsequently titrated up to 1,800 mg daily (divided tid).