The main indication for the medication Tadalista Professional is erectile dysfunction, a condition in which a man has difficulty achieving or maintaining an erection during sexual activity. It belongs to the class of medications known as phosphodiesterase type 5 inhibitors. The smooth muscles of the penile blood vessels relax when sexual excitation takes place, boosting blood flow and encouraging erection. When sexually excited, Tadalafil, the active ingredient in Tadalista Professional, helps to increase blood flow to the penis, which in turn promotes erections. Tadalista Professional is often taken orally with a glass of water 30 to 60 minutes before sexual activity.