Initially 5 mg tid for 3 days, increased to 10 mg tid for 3 days, then in similar increment & interval until 20 mg tid is reached or desired therapeutic effect is obtained.
Childn Initially 2.5 mg given qid, increased about 3 days until desired therapeutic effect is obtained. Maintenance dose:
6-10 yr 30-60 mg daily,
2-6 yr 20-30 mg daily,
12 mth-2 yr 10-20 mg daily.