Fildena 50 Mg contains Sildenafil Citrate, a potent phosphodiesterase type 5 (PDE5) inhibitor. This medication works by enhancing blood flow to the penis, which is essential for achieving and maintaining an erection. Sildenafil Citrate achieves this by relaxing the blood vessels in the penile area, allowing for increased blood flow when sexually stimulated. The typical dosage for severe ED is 50 Mg, taken approximately one hour before anticipated sexual activity.