Singanitropin 100iu is an effective but expensive drug. Ordinary people, as a rule, can not afford. It is used, as a rule, by professionals. Does not apply to steroids. Does not require post-cycle therapy. At high dosages, its combination with insulin is required.
Outside of bodybuilding, it is used to rejuvenate and improve the body (and really helps). Able to improve tissue regeneration. At high dosages, it leads to an increase in the size of internal organs. It is for this reason that top modern bodybuilders have such terribly large bellies.
Growth hormone is good both in terms of mass gain, and in terms of fat burning.