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A consumer OTC medicine group notes that products containing diphenhydramine "are not intended for long-term use."
(John Nacion/STAR MAX/IPx/AP/File via CNN Newsource)Despite its longstanding presence in American homes, the authors of the new review say diphenhydramine poses disproportionate risks, especially for children and older adults, than newer antihistamines.
Originally published at CNN.com Wire Service