Indication
For HTN, as monotherapy or in combination w/ thiazide diuretic, β-adrenoceptor blocking agent or ACE inhibitor. 1st-line treatment of myocardial ischemia due to fixed obstruction (stable angina) &/or vasospasm/vasoconstriction (Prinzmetal's or variant angina) of the coronary vasculature, as monotherapy or in combination w/ other anti-anginal drugs in patients w/ angina refractory to nitrates &/or adequate doses of β-blockers.