Calcium channel antagonists - Summary of recommendations and evidence
Use in intermediate- and high-risk patients. Non-dihydropyridine derivatives can be used in patients contraindicated to beta-blockers and without LV dysfunction.	I	B
Use in patients with variant angina of Prinzmetal.	I	B
Long-acting dihydropyridines can be used in patients with refractory ischemia and without ventricular dysfunctionwho are taking appropriate doses of nitrates and beta-blockers.	IIa	B
Dihydropyridine derivatives (rapid onset) can be used in high-risk patients who are taking appropriate doses of beta-blockers.	IIb	B
Dihydropyridine derivatives (rapid onset) can be used in patients who are not taking appropriate doses of beta-blockers.	III	B