Tadalafil

Tadalafil is the name of the active ingredient that will improve your erection. The most famous brand is Cialis, but there are also brands like Vidalista, Apcalis and Tadacip. It will help the blood vessels in the penis to relax, which results in a better bloodflow. It’s also known as the weekend-erection-ill, because it works up to 36 hours when sexually stimulated.