The functions of antihistamine are:

Antiallergic and Analgesic

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Antacid and antiallergic

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Antiallergic and antidepressant

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Analgesic and antacid

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Solution

The correct option is B Antacid and antiallergic
Antihistamine acts as both antacid and antiallergic. Antihistamine interfere with the natural action of histamine by competing with histamine for binding sites of receptor where histamine exerts its effect.

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