Platelet inhibitors are medications that help prevent blood clots by stopping platelets in the blood from sticking together. They are commonly used in patients with conditions like heart disease or after procedures such as stent placement to reduce the risk of heart attacks and strokes. These drugs work by blocking specific receptors on the surface of platelets, which are small cell fragments involved in blood clotting. Common types of platelet inhibitors include aspirin, clopidogrel, and ticagrelor. Doctors often prescribe them based on individual health needs and risks.