<unk> , sold under the brand name Procoralan among others, is a medication, which is an If inhibitor, used for the symptomatic management of stable heart-related chest pain and heart failure. Patients who qualify for use of<unk>  for coronary heart failure are patients who have symptomatic heart failure, with reduced ejection volume, and heart rate at least 70 bpm, and the condition not able to be fully managed by beta blockers.<unk>  acts by allowing negative chronotropy in the sinoatrial structure thus reducing the heart rate via specific inhibition of the pacemaker current, a mechanism different from that of beta blockers and calcium channel blockers, two commonly prescribed antianginal classes of cardiac pharmaceuticals.<unk>  has no apparent inotropic properties and may be a cardiotonic agent.
Ivabradine
Lofexidine
Setiptiline
Maprotiline
Verapamil
Nortilidine
Veratridine
Procainamide