What is Fildena 100 mg? Fildena 100 mg is a prescription medication primarily used for men experiencing difficulty in achieving or sustaining an erection. fildena 100 mg is a widely used medication designed to treat erectile dysfunction (ED) in men. It contains the active ingredient Sildenafil Citrate, which belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. This...