Fildena belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. It works by inhibiting the enzyme PDE5, which is responsible for the degradation of a substance called cyclic guanosine monophosphate (cGMP). By inhibiting PDE5, Fildena helps to increase the levels of cGMP, which promotes relaxation of the smooth muscles in the penis and improves blood flow, leading to an erection.

Fildena Purple Pill is a popular brand of sildenafil citrate and is available in various strengths and formulations. It has gained a reputation for being a reliable medication for ED due to its widespread use and positive experiences reported by many men who have used it.