An orally active growth-hormone secretagogue studied in GH research.
MK-677 (ibutamoren) is an orally active growth-hormone secretagogue. Technically it is a non-peptide compound, but it is commonly grouped with GH-research peptides. It is sold strictly as a research material. Compare against HGH 191aa, the recombinant hormone itself.
In animal and in-vitro models, researchers have examined this compound's relationship to:
These are areas of laboratory investigation, not established outcomes in people. For primary literature, see PubMed — MK-677 / ibutamoren research.
Part of the Growth / GH category. Related: Ipamorelin · CJC-1295 · Growth / GH hub
This compound is sold in the U.S. for research use only and is not approved for human consumption. The peptide compounding landscape shifted in 2026 — read our breakdown: The 2026 FDA Peptide Reclassification, Explained.
We only list vendors we have personally vetted and partnered with. None of our current verified partners stock MK-677 (Ibutamoren) yet — we’re adding new vetted suppliers regularly. In the meantime, browse compounds our trusted vendors do carry.
Products discussed are for laboratory and research purposes only — not for human consumption.
No — MK-677 is technically a non-peptide compound, but it is studied alongside GH-secretagogue peptides and grouped here for that reason.
Look for batch-specific, third-party Certificates of Analysis (COAs), transparent purity testing, U.S. sourcing, and a real reputation across independent review platforms. Our vendor reviews check all of these.
No. We're an independent research and comparison resource. We link to vetted third-party vendors and disclose every affiliate relationship.
Last reviewed June 2026. By the Peptides Uncaged Research Team.
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