Antiplatelet agents are drugs that interfere with the blood s ability to clot.
They re used to prevent blood clots from forming that can lead to heart attack or stroke. A blot clot starts when cells in the blood called platelets clump together where plaque forms in a blood vessel. Plaque forms when cholesterol and other substances build up in the inner lining of an artery. Antiplatelet agents work by preventing the platelets in the blood from clumping. Antiplatelet agents, including aspirin, are medicines that can have serious and potentially fatal side effects if not taken properly.