Tadalis is for men who suffer from erectile dysfunction disease. It is a sexually transmitted disease that detains a man from getting and maintaining an erection. Tadalafil is the active ingredient in this medicine. It works in the treatment of erectile dysfunction in men by increasing blood flow to the penis area by relaxing the muscles in the penile blood vessels. This medicine is a gelatin capsule that can be swallowed with a glass of water. You should consult your doctor before taking this medicine.