Caverta 50 mg is a medicine for the treatment of erectile dysfunction (ED) in men. It is a brand name for sildenafil citrate, which is the active ingredient in this medicine. Caverta 50 mg helps men with ED get and keep an erection hard enough for sexual intercourse. It works by relaxing the blood vessels in the penis, allowing more blood to flow into it. This increases the size of the penis, allowing for better sexual performance.