Methapyrilene hydrochloride is an uncommon antihistamine found in cold or flu medicines. It is generally considered non-toxic in small doses, but higher doses or ingestion by a child can be extremely toxic.
Poisonous Ingredient:
methapyrilene hydrochloride
Where Found:
antihistamine medications (older)
Review Date: 4/16/2004
Reviewed By: Cherlin Johnson, M.D., Department of Emergency Medicine, University of Southern California, Los Angeles, CA. Review provided by VeriMed Healthcare Network.
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