Technically not a SARM despite common classification. MK-677 is a ghrelin receptor agonist and growth hormone secretagogue. Orally active. Increases GH and IGF-1 without directly binding androgen receptors.
MK-677 fills a specific niche as an orally active compound that increases growth hormone and IGF-1 without direct androgen receptor activity. It is used during mass phases for the combined effects of increased appetite, improved sleep quality, accelerated recovery, and the anabolic environment created by elevated GH and IGF-1. Some athletes use it ...
MK-677 is frequently combined with other SARMs, particularly RAD-140 or LGD-4033, in stacks that aim to combine androgen receptor-mediated muscle growth with GH axis stimulation. It is also used alongside traditional anabolic stacks as a recovery and sleep enhancement addition, though this use pattern creates a more complex risk profile because the...
The insulin resistance that MK-677 causes is the most practically significant risk and it is one that users frequently ignore until it manifests as noticeable changes in fasting glucose or body composition response. Chronic elevation of GH and IGF-1 has proliferative potential, meaning it may accele...