Potassium channel opener with anti-anginal activity is:: (A) Nicorandil, (B) Dipyridamole, (C) Dofetilide, (D) AMIODARONE
Answer is A. Nicorandil opens ATP-dependent K+ channels causing aerial dilatation thus increasing afterload-potassium channel opener-used for angina Amiodarone and dofetilide are potassium channel blockers- class 3 antiarrhythmic agents REF.Essentials of Medical Pharmacology KD Tripathi 8th ed.