Adult Epilepsy Initially 100-200 mg once or bd, slowly raised to 400 mg bd-tds.
Oral susp Max daily dose: 1,200 mg.
Acute mania & maintenance treatment of bipolar-affective disorders Dosage range: 400-1,600 mg daily. Usual dosage: 400-600 mg daily in 2-3 divided doses.
Oral susp Max daily dose: 1,200 mg.
Alcohol w/drawal syndrome 200 mg tds, increased to 400 mg tds for 1st few days in severe cases.
Trigeminal & glossopharyngeal neuralgia Initially 200-400 mg daily, slowly raised daily until freedom from pain is achieved (normally 200 mg tds-qds). Then gradually reduce dosage to lowest possible maintenance level. Max: 1,200 mg daily.
Painful diabetic neuropathy 200 mg bd-qds.
Diabetes insipidus centralis 200 mg bd-tds.
Childn Epilepsy Maintenance dose: 10-20 mg/kg daily in divided doses,
>4 yr Initially 100 mg daily, increase at wkly intervals by 100 mg,
≥4 wk to 4 yr Initially 20-60 mg daily, increasing by 20-60 mg every 2nd day. Max:
>15 yr 1,200 mg daily,
6-15 yr 1,000 mg daily,
≥4 wk to 6 yr 35 mg/kg daily.
Elderly ≥65 yr Trigeminal neuralgia Initially 100 mg bd, slowly raised daily until freedom from pain is achieved (normally 200 mg tds-qds). Then gradually reduce dosage to lowest possible maintenance level. Max: 1,200 mg daily.