Bisogard is used to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Bisogard is a beta blocker that works by blocking the effect of certain natural chemicals (e.g., epinephrine) on the heart and blood vessels. Bisogard slows your heartbeat, lowers blood pressure, and reduces strain on the heart. Bisogard is is available in strengths of 2 and 5 mg.