Aspirin, Tylenol May Decrease Effectiveness of Vaccines, University of Missouri Study
University of Missouri -- COLUMBIA, Mo. – 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.