Failure to treat prolonged erection immediately can lead to a permanent loss of potency because the penile tissue would have been permanently damaged.New evidence suggests that over 90% of men with erectile dysfunction in the United States have used this drug to solve sexual dysfunction issues. Thus, they have been able to save their marriages and relationships. Viagra (sildenafil) is a drug that helps drive blood flow to specific regions of the body, it is blue in color. It is also useful in relaxing the muscles within the walls of the blood vessels.