Coracten SR is a brand name for a medication that contains the active ingredient Nifedipine, which belongs to a class of drugs known as calcium channel blockers. It is primarily used in the treatment of high blood pressure (hypertension) and to prevent chest pain (angina). The "SR" in its name stands for "sustained release," indicating that the medication is formulated to release the active ingredient slowly over time to provide a more consistent therapeutic effect. By relaxing the blood vessels, Coracten SR helps to improve blood flow and reduce the workload on the heart, making it easier for the heart to pump blood and oxygen to the body. This medication is typically prescribed when other treatments have not been effective or as part of a combination therapy with other medications.