Isosorbide dinitrate is a nitrate used pharmacologically as a vasodilator, e.g. in angina pectoris but also for anal fissure, a condition which is known to involve decreased blood supply leading to poor healing. It is also used as a direct vasodilator to treat congestive heart failure. Isosorbide dinitrate is sold under the brand names Isordil by Biovail, Cedocard and Sorbitrate. In UK and Hong Kong, a trade name of it...