Fildena 100 sildenafil pills contain sildenafil citrate, which is used to treat erectile dysfunction or impotence in males and to enhance blood flow in specific body locations. It is used to treat erectile dysfunction in men aged 18 to 65. It belongs to the class of PDE5 inhibitor medications. Sildenafil Citrate 100 purple pills are commonly known as "Triangle Pills" and are used to treat male erectile dysfunction or impotence. Fildena 100 Mg is a potent medication that allows males to get an erection. Fildena 100 tablets should only be taken as prescribed by the ED specialist or doctors. Sildenafil tablets are simply taken once per day, with or without food. Do not swallow the medicine whole without first breaking, crushing, and chewing it.