Fildena is the immediate way to treat impotency in men. It is the generic version of the patented Viagra pill, but it works much more rapidly than other branded medication. It is effective in 15 to 20 minutes time, and the effect lasts for about 4 to 6 hours. Fildena contains the Sildenafil Citrate that is feigned through the reverse engineering process. Fildena is the best acting medication for the treatment of erectile dysfunction in men. It instantly shows the effect as a PDE5 inhibitor that makes it possible for the impotent men to get firmness in the male reproductive organ that can last for a sufficient amount of time.