MK-677, also known as Ibutamoren or Nutrobal, is an orally administered growth hormone secretagogue. A secretagogue is a substance that causes another to be secreted by the body.
Ibutamoren is not actually a SARM, however it is categorized as such for its easier localization, but rather acts more similar to how peptides like Ipamorelin do. Ibutamoren is capable of boosting your natural levels of growth hormone (somatropin or HGH) production, as well as boosting the serum concentration of insulin-like growth factor-1 (IGF-1).
As a result of the increased production of these two hormones, the benefit of greater fat oxidation is obtained, faster healing of ligaments, tendons, bones and old injuries, construction of muscle mass and offers the skin a smoother appearance. .
Many users who have used the substance report a quite noticeable improvement in the quality of sleep, it is well known that rest is essential to achieve full muscle recovery.