How Does Cialis Work? Like other PDE5 inhibitors, Cialis blocks an enzyme known as phosphodiesterase type 5 (PDE5) in the spongy part of the privates.

Icariin also inhibits PDE5 (phosphodiesterase type 5), which is how drugs like Viagra or Cialis work. It's possible horny goat weed could have similar effects as PDE-5 inhibitors, ...

Cialis and Viagra both work in very similar ways and have similar effects on your arousal. Cialis and Viagra, as well as their generic equivalents, belong to a class of drugs referred to as PDE5 ...

But does it really work? Here's what professionals have to say. ... (Cialis) “are better options for helping [males] get good erections than supplements such as Virectin,” Shteynshlyuger says.

Cialis can work for an estimated 36 hours. However, Cialis does require a daily dose to be fully effective and relies on a certain level of the drug to have built up in your system.