Fildena 120 mg includes sildenafil citrate, which is a similar chemical to that found in other Fildena medication classes. The medication's main function is to inhibit protein phosphodiesterase within the blood vessel divider that supplies the penis. The cycling monophosphate is reduced when the protein PDE5 is increased in size. https://www.genericvilla.com/product/fildena-120mg-tablet-sildenafil-citrate/