Adult & childn ≥12 yr Angina, migraine & tremor Initially 40 mg bd-tds; then 120-240 mg/day for angina; 80-160 mg/day for migraine & tremor.
HTN Initially 80 mg bd, then 160-320 mg/day.
Arrhythmia, anxiety tachycardia, hypertrophic obstructive cardiomyopathy & thyrotoxicosis 10-40 mg tds-qds.
Post MI Initially 40 mg qds for 2-3 days, then 80 mg bd.
Phaeochromocytoma Pre-op: 60 mg daily for 3 days. Treatment dose: 30 mg daily.
Anxiety 40 mg before anxious situations; 40 mg bd-tds for long-term anxiety.
Portal HTN Initially 40 mg bd, may be increased to 80 mg bd; max: 160 mg bd.
Childn <12 yr Migraine 20 mg bd-tds. Doses are decided using body wt in all other indications.