Byscard 5mg tablet contains the active ingredient Bisoprolol, which belongs to a class of medications known as beta-blockers. It is primarily used to treat hypertension (high blood pressure), angina (chest pain), and congestive heart failure. By blocking the action of certain natural chemicals in the body, it helps to lower blood pressure, reduce the workload on the heart, and improve the heart's efficiency. The tablet is taken orally with or without food as directed by a doctor.