Antihistamine

Antihistamine

Dr. KennedyAn antihistamine is a drug that blocks the effect of histamine released (by mast cells) during an allergic reaction by blocking the action of the histamine on the tissue. Antihistamines do not stop the formation of histamine nor do they stop the conflict between IgE and antigen. Therefore, antihistamines do not stop the allergic reaction but protect tissues from some of its effects.

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