Edex treats erectile problems in men. It can also be used in diagnosing erectile dysfunction. It is a prostaglandin as it works by relaxing some muscles in the penis. It also widens blood vessels by increasing the flow of blood to the penis and causing an erection. Once the effect wears off, the normality of the blood flow returns the erection disappears. You should avoid using Edex if allergic to any of its ingredients. You should also avoid it if you have blood problems like sickle cell trait, sickle cell anemia, and leukemia.