Suhagra is used in Erectile Dysfunction treatment. Sildenafil Citrate 50 mg works by inhibiting the PDE5 enzyme. This inhibition increases the level of Cyclic Guanosine Monophosphate (cGMP), which improves penile blood flow and helps attain and sustain an erection upon receiving sexual stimulation. Besides ED, Sildenafil is also used to treat Benign Prostatic Hypertrophy (enlarged prostate) and Pulmonary Arterial Hypertension (PAH).