Ranozex 500 mg Tablet is a prescription medication manufactured by Sun Pharmaceutical (Bangladesh) Ltd., primarily used to manage chronic angina (chest pain) associated with coronary artery disease. The active ingredient, ranolazine, works by inhibiting late sodium currents in heart muscle cells, which reduces calcium overload and helps the heart muscle relax. This mechanism improves blood flow and oxygen supply to the heart, thereby alleviating angina symptoms. Ranozex is typically prescribed when other anti-anginal treatments, such as beta-blockers or calcium channel blockers, have not been effective or are not well-tolerated