Antiplatelet agents are medications that prevent blood clot formation by inhibiting the function of platelets, small cells in the blood that help with clotting. These agents are used to prevent or treat conditions such as heart attacks, strokes, and peripheral artery disease. They work by interfering with various pathways involved in platelet activation and aggregation, ultimately reducing the risk of clot formation. Common examples of antiplatelet agents include aspirin, clopidogrel, and ticagrelor. These medications are often prescribed in combination with other medications, such as blood thinners, to provide optimal protection against clotting events.