<prompt> Potassium channel opener with anti-anginal activity is:NicorandilDipyridamoleDofetilideAMIODARONE  <response>: 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. 