Ais administered within a few hours after a heart attack or stroke to dissolve the damaging blood clots.?

A "beta-blocker" or clotbuster are the types of medication used to dissolve clots involved in MIs and CVAs. Remember though to be aware that two other medications that are used to prevent further clot build up are not clot busters but instead vasodilators (Nitroglycerin) or clotting antagonist (Aspirin).

Organism, organ system, organs, tissue, cells