Treat erectile dysfunction by relaxing muscle tissues of blood vessels and raising blood flow to the genital areas. The drug contains Fildena 100 mg of Sildenafil Citrate component that deals with erectile dysfunction. Fildena 100 purple pill is very effective on men with erectile dysfunction owing to the active ingredient sildenafil citrate. Fildena 100 works by expanding the bloodstream into the penis, accordingly accomplishing as well as keeping up with erection during sexual excitement. Sildenafil citrate works by inhibiting the action of the enzyme called PDE-5, which is responsible for the degradation of a compound called cyclic guanosine monophosphate (cGMP) in the penis. Fildena Double 200mg lowers blood pressure, relaxes the flexible muscles of the penile wall, and interacts with blood vessels. Sildenafil Citrate, the main ingredient in Fildena, improves blood flow in the penis, allowing the patient to have a stronger erection for longer than usual.