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Antihistamines

Antihistamine medicines block the action of the chemical histamine during an allergic reaction to an irritant (allergen). Allergic symptoms, such as sneezing and itching, are not as bad when an antihistamine is taken.

Author Debby Golonka, MPH
Editor Sydney Youngerman-Cole, RN, BSN, RNC
Associate Editor Pat Truman
Primary Medical Reviewer Patrice Burgess, MD
- Family Medicine
Last Updated March 15, 2007

WebMD Medical Reference from Healthwise

Last Updated: March 15, 2007
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