✅ What Is Fildena 120? Fildena 120 is a prescription drug used to treat erectile dysfunction (ED). It belongs to a class of medications known as phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil Citrate, the active ingredient in Fildena 120, works by inhibiting the action of the enzyme PDE5, which is responsible for breaking down a chemical in the body called cyclic guanosine monophosphate...