The active substance in BISOLOL is (bisoprolol fumarate). Bisoprolol fumarate belongs to a group of medicines called beta-blockers. These medicines work by affecting the body’s response to some nerve impulses, especially in the heart. As a result, bisoprolol slows down … The active substance in BITROL is (bisoprolol fumarate). Bisoprolol fumarate belongs to a group of medicines called beta-blockers. These medicines work by affecting the body’s response to some nerve impulses, especially in the heart. As a result, bisoprolol slows down … The active substance in CARDEX is (bisoprolol fumarate). Bisoprolol fumarate belongs to a group of medicines called beta-blockers. These medicines work by affecting the body’s response to some nerve impulses, especially in the heart. As a result, bisoprolol slows down … The active substance in CARDICOR is (bisoprolol fumarate). Bisoprolol fumarate belongs to a group of medicines called beta-blockers. These medicines work by affecting the body’s response to some nerve impulses, especially in the heart. As a result, bisoprolol slows down … The active substance in SELECTA is (bisoprolol fumarate). Bisoprolol fumarate belongs to a group of medicines called beta-blockers. These medicines work by affecting the body’s response to some nerve impulses, especially in the heart. As a result, bisoprolol slows down …