How does Viagra work?
A) It increases blood flow into the penis.
B) It draws blood flow out of the penis to create a vacuum.
C) It increases testosterone levels.
D) It creates new cognitions about sex.

Question

Quizplus · Accepted Answer

Viagra works by increasing blood flow into the penis, which helps to achieve and maintain an erection. It does this by inhibiting an enzyme called phosphodiesterase type 5 (PDE5), which leads to an increase in the levels of cyclic guanosine monophosphate (cGMP), resulting in the relaxation of smooth muscle cells and increased blood flow.

How Does Viagra Work