Clopidogrel is an inhibitor of platelet aggregation, indicated for the prevention of ischemic stroke and in-stent thrombosis. However, it has a number of drawbacks, including an increased risk of hemorrhage; a clinical effect that is slow in onset. Clopidogrel prevents platelets in your blood from sticking together. This helps prevent the formation of blood clots that can block the flow of blood to your heart and brain and increase your. Plavix (clopidogrel) is a brand-name prescription drug that’s used to help prevent cardiovascular events. Learn about side effects, warnings, dosage, and more. Plavix (clopidogrel) is an antiplatelet used with aspirin to reduce heart attack and stroke risk in acute coronary syndrome, peripheral arterial disease, and after MI or stroke. Plavix is used to reduce the risk of heart attack and stroke in certain adults. Find out what the recommended dosages are, how to take the drug, and more. Clopidogrel is a prescription medication that helps prevent blood clots by keeping platelets from sticking together. Doctors prescribe it to reduce the risk of heart attacks or strokes in people. Plavix prevents platelets in your blood from sticking together to form an unwanted blood clot that could block an artery. Plavix is used to lower your risk of having a stroke, blood clot, or serious heart problem after you've had a heart attack, severe chest pain (angina), or circulation problems. Clopidogrel is used alone or together with aspirin to lessen the chance of a heart attack or stroke. Clopidogrel is used to prevent heart attack and stroke in people who are at high risk of these events, including those with a history of myocardial infarction and other forms of acute coronary syndrome, stroke, and those with peripheral artery disease. Clopidogrel (Plavix®) is an antiplatelet drug you can take to prevent blood clots. It keeps platelets in your blood from coming together and making clots.