Cialis belongs to a group of medications called phosphodiesterase type 5 inhibitors, which relax muscles and improve blood flow in certain parts of the body. Cialis is most often prescribed to men with erectile dysfunction (ED) and is taken prior to expec...

The active ingredient of Cialis 10mg — tadalafil — works by relaxing smooth muscle in the blood vessels of the penis. Thus, Cialis increases blood flow to the penis and helps men with ED get and keep an erection satisfactory for sexual activity.

Cialis works in a similar way to other erectile dysfunction treatments. It relaxes muscles around your penis, improving blood flow and making it easier to get and keep erections when you’re aroused.