Which of the following statements about histamines and antihistamines is NOT true? A) A chief side effect of antihistamines is sedation. B) Stimulation of the H₁ histamine receptors plays a major role in the development of anaphylaxis. C) Although asthma attacks can be caused by allergens, antihistamines should not be administered as a treatment. D) There are antagonists for both H₁ and H₂histamine receptor sites.

Question

Quizplus · Accepted Answer

The incorrect statement is related to the designation of histamine receptors. The correct nomenclature for histamine receptors includes H1, H2, H3, and H4, not "H₁" or similar. H1 receptors are indeed involved in allergic reactions, including anaphylaxis, but the provided receptor designation is incorrect.

Which of the Following Statements About Histamines and Antihistamines Is