plavix helps protect people with acs against heart attack or stroke: people like you. it's one of the most researched prescription medicines. goes beyond what they do alone by helping to keep blood plelets from sticking and forming dangerous clots. plavix. protection against heart attack or stroke in people with acs. [ female announcer ] plavix is not for everyone. certain genetic factors and some medicines such as prilosec reduce the effect of plavix leaving you at greater risk for heart attack and stroke. your doctor may use getic tests to determine treatment. don't stop taking plavix without talking to your doctor as your risk of heart attack or stroke may increase. people with stomach ulcers or conditions that cause bleeding should not use plavix. taking plavix alone or with some other medicines, including aspirin, may increase bleeding risk, which can potentially be life threatening, so tell your doctor when planning surgery. tell your doctor all medicines you take, including aspirin, especially if you've had a stroke. if fever, unexplained weakness or confusion develops, tell your doctor promptly. these may be signs of ttp,