Indications And Dose
Thyrotoxicosis (adjunct) ▶BY MOUTH ▶Adult: 10–40 mg 3–4 times a day Thyrotoxic crisis ▶BY INTRAVENOUS INJECTION ▶Adult: 1 mg, to be given over 1 minute, dose may be repeated if necessary at intervals of 2 minutes, maximum total dose is 5 mg in anaesthesia; maximum 10 mg per course Hypertension ▶BY MOUTH ▶Adult: Initially 80 mg twice daily, dose should be increased at weekly intervals as required; maintenance 160–320 mg daily Prophylaxis of variceal bleeding in portal hypertension ▶BY MOUTH ▶Adult: Initially 40 mg twice daily, then increased to 80 mg twice daily (max. per dose 160 mg twice daily), dose to be adjusted according to heart rate Phaeochromocytoma (only with an alpha-blocker) in preparation for surgery ▶BY MOUTH ▶Adult: 60 mg daily for 3 days before surgery Phaeochromocytoma (only with an alpha-blocker) in patients unsuitable for surgery ▶BY MOUTH ▶Adult: 30 mg daily Angina ▶BY MOUTH ▶Adult: Initially 40 mg 2–3 times a day; maintenance 120–240 mg daily Hypertrophic cardiomyopathy | Anxiety tachycardia ▶BY MOUTH ▶Adult: 10–40 mg 3–4 times a day Anxiety with symptoms such as palpitation, sweating and tremor ▶BY MOUTH ▶Adult: 40 mg once daily, then increased if necessary to 40 mg 3 times a day Prophylaxis after myocardial infarction ▶BY MOUTH ▶Adult: Initially 40 mg 4 times a day for 2–3 days, then 80 mg twice daily, start treatment 5 to 21 days after infarction Essential tremor ▶BY MOUTH ▶Adult: Initially 40 mg 2–3 times a day; maintenance 80–160 mg daily Migraine prophylaxis ▶BY MOUTH ▶Adult: 80–240 mg daily in divided doses Arrhythmias ▶BY MOUTH ▶Adult: 10–40 mg 3–4 times a day ▶BY INTRAVENOUS INJECTION ▶Adult: 1 mg, to be given over 1 minute, dose may be repeated if necessary at intervals of 2 minutes, maximum 10 mg per course (5 mg in anaesthesia)
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