Esiclene (Caverject) is a steroid that is somewhat different from the others and the substance of formebolone is available in various forms of administration. For athletes only the injectable version is of interest. Because of its anabolic effect, Esiclene is not well suited as a steroid for athletes. In bodybuilding... it is a highly valued and commonly used compound since it has the unusual characteristic of allowing any muscle to increase in diameter and size within the shortest period. How is this possible? Esiclene stimulates the muscle tissue located at the point of injection.