VPT-0017
QUESTION
H receptor antagonist is?
OPTIONS
(A) Nizatidine
(B) Mepyramine
(C) Terfenadine
(D) All of the above
ANSWER
(D) All of the above
EXPLANATION
Nizatidine blocks H2 histamine receptors, while mepyramine and terfenadine are H1 antihistamines. Because all three are histamine-receptor antagonists, all of the above is correct, and each individual option alone is incomplete.
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