Fildena 100 purple triangle is a generic medicine for the treatment of Erectile Dysfunction (ED). ED is a male impotency, where a male cannot get proper arousal due to a fall in cGMP levels. Sildenafil Citrate, the major ingredient of Fildena 100, inhibits PDE-5 to increase cGMP levels. Thus, Fildena 100 treats ED and gives male their highly desired erection.