Pseudoephedrine is a vasoconstriction drug that is commonly used in cold medications to alleviate nasal congestion.Its mechanism of action most likely involves
A) contraction of arteriole muscle cells.
B) relaxation of arteriole muscle cells.
C) swelling of red blood cells.
D) closing of the valves that lead from capillaries to arterioles.
E) formation of additional capillaries when needed.

Question

Quizplus · Accepted Answer

Pseudoephedrine is a vasoconstrictor drug, which means it causes the contraction of smooth muscle cells in the walls of blood vessels, particularly in the nasal passages. This leads to the narrowing of blood vessels, thereby reducing blood flow and congestion.

Pseudoephedrine Is a Vasoconstriction Drug That Is Commonly Used in Cold