Fildena is a brand of medication used to treat erectile dysfunction (ED) in men. It contains sildenafil citrate as its active pharmaceutical ingredient, similar to other popular ED medications such as Viagra. Sildenafil citrate is a type of medication known as a phosphodiesterase type 5 (PDE-5) inhibitor. Sildenafil citrate works by inhibiting the enzyme PDE-5, which regulates blood flow in the penis. By blocking PDE-5, sildenafil allows the blood vessels in the penis to relax and widen, allowing for increased blood flow. This improved blood flow helps men to achieve and maintain an erection when sexually aroused. |