Parkinson's disease: initial, 1 mg/day ORALLY on first day,
then increase in 2 mg increments at 3 to 5 day
intervals;
6 to 10 mg normal daily dose; 12 to 15 mg/day postencephalitic
Parkinson's disease: maintenance, 5 to 15 mg ORALLY DAILY (divided 3 to 4 times daily)
Parkinsonism due to drug: 5 to 15 mg ORALLY DAILY (divided 3 to 4 times daily)