Clopidogrel is a medication that helps prevent blood clots. It is commonly prescribed for patients who have had a heart attack, stroke, or certain heart conditions. By inhibiting platelets in the blood from sticking together, clopidogrel reduces the risk of serious cardiovascular events. This drug is often used in combination with other medications, such as aspirin, to enhance its effectiveness. Clopidogrel is usually taken orally in tablet form and may require regular monitoring by a healthcare provider to ensure it is working properly and to manage any potential side effects.