Fildena 120 contains a comparative substance compound like other Fildena drug classes, which is Sildenafil Citrate. The main activity of the drug is to limit the protein phosphodiesterase in the divider of blood vessels leading to the p*nis. When the amount of PDE5 protein is increased, cyclic monophosphate decreases. This cyclic monophosphate is responsible for dilating the tracts of the p*nis. When cGMP builds up, the progression of the blood expands, which uniquely helps during incitement cases.