Like the other Mix Products Injection, the Trenbolone, Testosterone, and Nandrolone, Sustanon is also an androgenic steroid with anabolic effect. For that reason, athletes generally use it to gain on size and mass while increasing the strength. But unlike the other testosterone compounds like the testosterone enanthate and testosterone cypionate, the use of Sustanon may lead to estrogenic adverse effect and fewer water retention. This is beneficial to those bodybuilders who are suffering from gynecomastia but still seek the anabolic effect of injectable testosterone.