How Does Viagra Work?

Adammiller08 Jul, 2025Health

Let’s unpack the answer to how Viagra works. When a man is aroused, nitric oxide is released in the body. This stimulates an enzyme called cGMP that relaxes the smooth muscles in the penis and allows blood to flow in. Men with ED often have an enzyme called PDE5 that breaks down cGMP too quickly. Viagra pills block PDE5, allowing cGMP to do its job and blood to flow normally. This helps produce a firmer and longer-lasting erection.