Hello everyone, my name is Aurelia and I have taken Plavix for the past five years. It's primary use is keeping platelets from sticking.It's also a blood thinner. It does a wonderful job on all conditions, however, as with all drugs it does have some side effects. Some people experience stomach upset, so it's best taken with food or milk . It may or may not subside with continued use. It can cause stomach problems, such as bleeding, especially if you also take aspirin and have an underlying condition such as an ulcer. If you experience tarry black stools this could indicate a possible serious side effect( bleeding of the stomach lining or ulcer) so please contact your health care provider immediately.I would recommend this medication especially if your cholesterol is very high and /or you've recently had a heart attack.