Tadalafil is a PDE5 inhibitor (those drugs which are used to supply blood in penis), which is available in pill form for treating erectile dysfunction (ED) under the name Cialis. It is developed and marketed world-wide by company Lilly ICOS.
Today, Cialis is wonderful pill which is used by large number of males who are suffering from the problem of erectile dysfunction. And it is capable to treat both the conditions of erectile dysfunction i.e the inability of getting any erection as well as getting soft erections.