<prompt> The following Potassium channel opener is used in anginaNicorandilHydralazineFasudilRanolazine  <response>: Nicorandil, minoxidil, pinacidil are potassium channel openers used in angina which produce hyperpolarization. and causing the vasodilation and reducing the oxygen demand and increase the oxygen supply yo the infracted area. Ref: KD Tripathi 8th ed. 