MK-677, also known as Ibutamoren, is a potent oral ghrelin receptor agonist classified under the category of Growth Hormone Peptides. It is designed to stimulate the secretion of growth hormone (GH) and insulin-like growth factor 1 (IGF-1) without increasing cortisol levels. This peptide is notable for its ability to enhance growth hormone levels in a non-injection form, making it a unique compound in the realm of peptide research.
MK-677 has garnered attention in various scientific studies due to its potential effects on muscle growth, fat metabolism, and overall body composition. Its mechanism of action primarily involves mimicking the effects of ghrelin, a hormone that plays a crucial role in hunger and energy balance.
MK-677 functions by binding to the ghrelin receptor in the brain, which triggers the release of growth hormone from the pituitary gland. This action leads to an increase in circulating levels of IGF-1, a hormone that mediates many of the anabolic effects of growth hormone.
MK-677 serves as a valuable tool in research related to growth hormone modulation and its effects on muscle growth, fat metabolism, and sleep quality. Its unique properties as an oral ghrelin receptor agonist make it a significant compound in the study of growth hormone peptides.
Last updated: Feb 25, 2026
Ipamorelin
CJC-1295
GHRP-2
GHRP-6
CJC-1295 DAC
Mecasermin
Browse all Growth Hormone Peptides or work out reconstitution math with the peptide reconstitution calculator.
USD offers ranked by price per mg; offers in other currencies are listed separately below
| Store | Price | Size | Per mg | Stock | COA | Shipping | Last checked |
|---|---|---|---|---|---|---|---|
| $89.00 | 25 mg | $3.56/mg | In stock | — | — | Oct 28, 2026 |
Research-use catalog facts from published directory listings. Missing fields show as an em dash. This is not a ranking, rating, or medical recommendation.
View all 1 store selling MK-677