Fildena 120 works by limiting the substance phosphodiesterase type 5 (PDE5), which is responsible for the breakdown of cyclic guanosine monophosphate (cGMP) in the corpus cavernosum of the penis. By blocking PDE5, Fildena 120 associates increase cGMP levels, which achieves smooth muscle loosening up and additionally created circulation system to the penis during sexual energy. Finally, this framework achieves a firm and upheld erection sensible for sexual activity.