Dosage guide

MK-677 (Ibutamoren) Dosage

Oral GH secretagogue (non-peptide)

MK-677 (ibutamoren) has no approved label, so every dose figure here traces back to its published human trials rather than a prescribing guideline. Across studies in healthy older adults, hip-fracture recovery, and Alzheimer's disease, the dose tested was an oral 25 mg once daily.[1][2][3]

Reviewed for accuracy · Last reviewed July 8, 2026

Dosing

Across the published human trials, the dose studied was a single oral 25 mg once daily. This describes what was tested, not a recommendation:

SettingDose studied
Healthy older adults (2-year trial)25 mg once daily, oral
Hip-fracture recovery (Phase IIb)25 mg once daily, oral
Alzheimer's disease (12-month trial)25 mg once daily, oral
The 25 mg once-daily figure is the clinical dose studied in trials, not a prescribing guideline. MK-677 is not FDA-approved.

Because MK-677 is a non-peptide small molecule taken by mouth, there is no injection or reconstitution step. Treat the 25 mg once-daily figure as a description of what was studied, not a recommendation, and note that the trials measured biomarker and body-composition changes rather than validating a dose for everyday use.

FAQ

What MK-677 dose was used in trials?A single oral 25 mg once daily was used in the healthy-older-adult, hip-fracture, and Alzheimer's trials. There is no approved dose because MK-677 is not FDA-approved.
Is MK-677 injected?No. MK-677 is orally active, so it is taken by mouth rather than injected, unlike the GH-releasing peptides it is often compared with.

References

  1. Effects of an Oral Ghrelin Mimetic on Body Composition and Clinical Outcomes in Healthy Older Adults: A Randomized TrialAnnals of Internal Medicine · 2008 · PMID 18981485 · DOI 10.7326/0003-4819-149-9-200811040-00003
  2. MK-0677 (ibutamoren mesylate) for the treatment of patients recovering from hip fracture: a multicenter, randomized, placebo-controlled phase IIb studyArchives of Gerontology and Geriatrics · 2011 · PMID 21067829 · DOI 10.1016/j.archger.2010.10.004
  3. Growth hormone secretagogue MK-677: no clinical effect on AD progression in a randomized trialNeurology · 2008 · PMID 19015485 · DOI 10.1212/01.wnl.0000335163.88054.e7
Tracking a research protocol? PepHub can log your daily doses and notes.Coming soon

This page is an independent educational reference and is not medical advice, and does not indicate any approval status for any use. MK-677 is a non-peptide research compound and is not FDA-approved. Talk to a doctor before starting any compound.