Bellingham, WA:When patients who could not tolerate aspirin were told to take Plavix, they probably assumed that the risk of Plavix side effects would be similar to, if not less than, those associated with aspirin. At they very least, even with a risk of Plavix stomach bleeding, they would have assumed that Plavix was as effective as aspirin, and certainly no more harmful. Yet some studies suggest that the risk of side effects, including a link between Plavix and bleeding, combined with a lack of effectiveness, making the drug less appealing than some alternatives.
One study, published in The New England Journal of Medicine (01/20/05), compared the use of aspirin combined with esomeprazole (Nexium) against the use of clopidogrel (the generic version of Plavix) combined with a placebo. The purpose of the study was to determine whether clopidogrel itself was a safer, more effective alternative to aspirin combined with a proton-pump inhibitor (Nexium) for patients with a higher risk of developing an ulcer.
Researchers found that 13 patients in the clopidogrel group suffered recurrent ulcer bleeding, compared to one person in the aspirin and esomeprazole group. Furthermore, three patients in the clopidogrel group suffered bleeding outside of the gastrointestinal tract; of those, two suffered intracranial hemorrhage and one person required a transfusion. None of the patients in the aspirin group suffered bleeding outside the gastrointestinal tract.
Finally, of the 12 patients who died during the study, eight patients were in the clopidogrel group (cause of death included myocardial infarction, heart failure, sepsis and intracranial hemorrhage). Four of the deaths were in the aspirin group (cause of death included myocardial infarction, cerebrovascular insufficiency and renal failure.)
For patients who suffer gastrointestinal bleeding when taking aspirin—which is often used to prevent heart attack—Plavix is recommended because it was thought to have a lowered risk of serious side effects while being at least as effective. Researchers for the study concluded, however, "Our observations do not support the current recommendation that clopidogrel be used for patients who have major gastrointestinal intolerance of aspirin."
In 2006, a study published in The New England Journal of Medicine (04/20/06) found there was no significant benefit to treating patients with clopidogrel and aspirin, compared with giving the patients aspirin and a placebo. In fact, researchers found that patients who did not have symptoms of heart attack or stroke, the risk of death and moderate to severe bleeding increased when given clopidogrel. Furthermore, they found that there was, "no significant benefit associated with clopidogrel plus aspirin as compared with placebo plus aspirin in reducing the incidence of the primary end point of myocardial infarction, stroke or death from cardiovascular causes."
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READER COMMENTS
Posted by dee
on
my husband also took plavix for about three years after a pacemaker was placed, until almost a year ago husband had a intrcranial brain bleed but had had a mylogram down 4 days prior, he to was on prilosec the whole time. didnt know any of this until reading here on enternet, was asking if my husband should be back on it or not and nurse said couldnt tell me that but i said well i still have to protect his heart if i can so i give him a baby aspirin at night, according to when most people having heart attacks during certain times which i read finally after getting in with heart dr he said to keep giving him aspirin so. thank
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