ScienceDaily (Dec. 2, 2009) — With flu season in full swing and the threat of H1N1 looming, demand for vaccines is at an all-time high. Although those vaccines are expected to be effective, University of Missouri researchers have found further evidence that some over-the-counter drugs, such as aspirin and Tylenol, that inhibit certain enzymes could impact the effectiveness of vaccines.
"If you're taking aspirin regularly, which many people do for cardiovascular treatment, or acetaminophen (Tylenol) for pain and fever and get a flu shot, there is a good chance that you won't have a good antibody response," said Charles Brown, associate professor of veterinary pathobiology
in the MU College of Veterinary Medicine. "These drugs block the enzyme COX-1, which works in tissues throughout the body. We have found that if you block COX-1, you might be decreasing the amount of antibodies your body is producing, and you need high amounts of antibodies to be protected."
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I don't find this surprising. Some years ago, when I was taking time-release aspirin before I went to bed, for back pain, I started gettomg sick a lot. Then I read that aspirin depresses the immune system, and stopped taking it. I stopped getting sic so often.
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