How Sildenafil Works
Sildenafil or brand-name Viagra works by temporarily increasing the blood flow through the penis, helping you to get and maintain an erection during sexual activity.
It belongs to a group of medications called phosphodiesterase-5 (PDE-5) inhibitors that block the action of PDE5, stimulating more blood flow through the penis, which causes an erection.
People prefer to buy sildenafil citrate tablets as they can provide a harder and long-lasting erection exactly when they need it.