How Do Antihistamines work?
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Antihistamines are the antidote to exposure to histamine. As their name
implies, antihistamines are able to block the effects of histamine in your
body. [You should think of antihistamines as being the bouncer at
a club].
When histamine molecules get onto the surface of the cell, they cause
inflammation and irritation.
Antihistamines displace the histamine molecules from the cell and form
a protective shield around the cells so that histamine can not interact
with the cell to cause an allergic reaction.