Viagra preceded Cialis in the marketplace and it’s also still today the most famous drug for ED. It is generally considered to give the user the strongest erections compared to other medications. People also love Viagra because it begins working rather fast (in as little as a half-hour), and lasts for a number of hours. The major difference between Viagra and Cialis is the fact that Cialis may last for a long time than Viagra. This is why Cialis is usually called the ‘Weekender’. One pill can last so long as 36 hours.

Cialis Professional 20 mg (the active ingredient is Tadalafil 20 mg) can be a preparation containing more complicated formula than usual Cialis; it can help by various erectile dysfunctions better. New formula ensures gain of faster efficient lead to growing process. Particularly, drawn in dose corresponding to 20 mg Cialis is considered to be more effective mean at struggle with problems of male genital sphere.