Vigora 50 mg is a medication used to treat erectile dysfunction (ED) in men. It contains sildenafil citrate as its active ingredient, which is a phosphodiesterase type 5 (PDE5) inhibitor. Like other PDE5 inhibitors such as Viagra (sildenafil), Vigora 50 mg works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection.