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Aspirin May Trigger Bleeding

Q. About a month ago my son-in-law started taking one regular Bayer aspirin each morning and one Bayer PM before going to sleep. Two weeks into this regimen he started bleeding from the mouth while he was sleeping. He stopped taking the aspirin and the bleeding stopped as well. Is this a possible side effect?

A. Aspirin can thin the blood by interfering with the sticky part of blood called platelets. Some people are especially susceptible to this effect so even a standard dose might trigger bleeding.

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.”.
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