Caverta 50 mg medicine, which is informally also known as the “blue tablet” and Caverta 100 mg tablet contains Sildenafil. It is better known as the blue pill. It is an effective medicine used for the treatment of erectile dysfunction (ED) in men. Caverta Tablet is used in men to treat erectile dysfunction. It contains sildenafil as its main component which functions to improve blood flow into the penis area to maintain long-lasting hard erection.