Detailed Clopidogrel dosage information for adults. Includes dosages for Myocardial Infarction, Ischemic Stroke, Acute Coronary Syndrome and more; plus renal, liver and dialysis adjustments. Plavix ( clopidogrel ) is used to prevent blood clots after a recent heart attack or stroke. Includes Plavix side effects, interactions and indications. Find patient medical information for Clopidogrel ( Plavix ) on WebMD including its uses , side effects and safety, interactions, pictures, warnings, and user ratings Clopidogrel Brand names: Grepid, Plavix Find out how clopidogrel helps prevent blood clots and reduces the risk of heart attacks and strokes, and how to take it.