Drug Class: Cardiovascular Drugs
Dosage Form: Tablet
Strength: 10mg, 40mg, 60mg, 80mg
Indications/Special comments: Cardiac arrhythmia, myocardial infarction, angina pectoris, hypertension, adjunct in the management of thyrotoxicosis, migraine prophylaxis.
Dosage Administration: Tachyarrhythmias: Oral: Adult: 10 - 30mg/dose every 6 - 8 hours. Child: Initial: 0.5 - 1mg/kg/day in divided doses every 6 - 8 hours; titrate dosage upward every 3 - 7 days; usual dose: 2 - 6mg/kg/day; higher doses may be needed; do not exceed 16mg/kg/day or 60mg/day. Hypertension: Oral: 80mg twice daily increased at weekly intervals as required, maintenance 160 - 320mg daily.