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Experimental · 4.9/10

MK-677 (Ibutamoren)

Evidence C · mixed evidence ▲ 14.6% momentum 🥇 First scout open
4.9/ 10

MK-677 (ibutamoren) is an oral, once-daily growth-hormone secretagogue that raises IGF-1 by about 50 to 97 percent and adds roughly 1.1 kg of fat-free mass, per the Nass 2008 two-year trial, but it also raises fasting glucose and never won FDA approval. Read the full breakdown →

The prediction game

Where does MK-677 (Ibutamoren) go in 12 months?

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The Crowd’s Call

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Your 12-month call on MK-677 (Ibutamoren)

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Be the first scout on record for MK-677 (Ibutamoren). Permanent credit on this page, plus points when your call resolves.

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Weigh In

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Ring Experimental Momentum 14.6% Updated Jul 20, 2026 How the Index ranks →

For education only, not medical advice. Supplements, peptides, and protocols can interact with medications and conditions. Talk to a qualified clinician before starting anything here.