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Question

Histamine stimulates the secretion of pepsin and hydrochloric acid and antihistamines are used to prevent the action of histamines. Among the following which are antihistamines?

A
Ranitidine
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B
Terfenadine
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C
Brompheniramine
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D
All of these
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Solution

The correct option is D All of these
Antihistamines interfere with the natural action of histamines by competing with histamines for binding sites of receptor where histamine exerts its effect.

Examples of antihistamines include Ranitidine, Cimetidine, Terfenadine (Seldane), Brompheniramine (Dimetapp) etc,.

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