Caverta 50 mg is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which is a phosphodiesterase type 5 (PDE5) inhibitor.Sildenafil citrate works by increasing blood flow to the penis during sexual stimulation, helping men achieve and maintain an erection. It belongs to the same class of medications as tadalafil (Cialis), vardenafil (Levitra), and avanafil (Stendra).