Sildamax 100 mg is a phosphodiesterase type 5 (PDE 5) inhibitor, a category of medicine used to treat erectile disorder (impotence) in person males. The inability to maintain a firm and erect penis suitable for sexual activity is called erectile dysfunction. whilst someone is sexually inspired, Sildamax 100 mg works by way of enjoyable the blood vessels inside the penis, allowing blood to flow into the penis.