From
http://www.drugs.com/cons/plavix.htmlClopidogrel (kloh-PID-oh-grel) is used to lessen the chance of heart attack or stroke. It is given to people who have already had a heart attack or stroke or to people with other blood circulation problems that could lead to a stroke or heart attack.
A heart attack or stroke may occur when a blood vessel in the heart or brain is blocked by a blood clot. Clopidogrel reduces the chance that a harmful blood clot will form by preventing certain cells in the blood from clumping together. This effect of clopidogrel may also increase the chance of serious bleeding in some people.
This medicine is available only with your doctor's prescription, in the following dosage form(s):
Oral
Tablets (U.S.)