Silditop 100 is a prescription medication used to treat erectile dysfunction (ED) in adult men. It contains sildenafil citrate, a PDE5 inhibitor that helps increase blood flow to the penis during sexual stimulation, supporting the ability to achieve and maintain a firm erection. Silditop 100 is a prescription medication used to treat erectile dysfunction (ED) in adult men. It contains sildenafil citrate, a PDE5 inhibitor that helps increase blood flow to the penis during sexual stimulation, supporting the ability to achieve and maintain a firm erection.