Caverta 50 mg is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient Sildenafil citrate, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil citrate works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which regulates blood flow in the penis. By blocking PDE5, Sildenafil increases blood flow to the penis during sexual stimulation, resulting in an erection.