The mechanism of action of “Terfendine” (Seldane) is

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Activates the histamine receptor

Inhibits the secretion of histamine

Helps in the secretion of histamine

Inhibits the action of histamine receptor

answer is D.

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Detailed Solution

Terfenadine (sold under the brand name Seldane) is an antihistamine medication that works by blocking the H1 histamine receptor, which is responsible for mediating the allergic response in the body.
Histamine is a chemical released by the body's immune cells in response to allergens, which causes symptoms such as itching, sneezing, runny nose, and watery eyes.
Histamine binds to and activates the H1 histamine receptor, leading to the release of other chemicals that cause the symptoms of an allergic reaction.
Terfenadine competes with histamine for binding to the H1 receptor, blocking its activation by histamine.
This reduces the release of other chemicals that cause the symptoms of an allergic reaction, leading to a reduction in allergy symptoms.

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