Ibutamoren (MK-677)
A non-peptide ghrelin-receptor agonist that raises GH and IGF-1 levels for 24 hours after an oral dose; studied for muscle wasting and GH deficiency, with increased appetite and blood sugar as side effects.
Never approved; research chemical only.
Look it up on Wikipedia3 listings across 2 independently tested vendors, ranked by price per milligram after coupon codes anyone can use. Vendors you can only order from by message are hidden.
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On FDA's Category 2 list for 503A and 503B (potential heart-failure signal): it can't be compounded.
Daily price tracking started October 7, 2026; a price-history chart appears here once a few days have been collected.
| Vendor | Trust | Listing | Vials | Price | Per mg | |
|---|---|---|---|---|---|---|
Simple Peptide #25 by metascore · US, FL 33446 |
Metascore 83Finnrick 62%PepIndex 82/100Bought vials 100% of label · 44 testsTitrateLabLab 99.1% pure · 103% of labelOnline checkout |
MK-677 | 60 × 12.5 mg = 750 mg | $85.00 $1.42 per vial |
$0.113 | Buy |
Modern Aminos Affiliate #125 by metascore · US |
Metascore 75 medium confidenceFinnrick 79%PepIndex 81/100Bought vials 100% of label · 5 testsTitrateLab · PeptideBase · Peptide CriticNo report for thisOnline checkout |
MK-677 (Ibutamoren) 25MG Dry-Fill $30 off through this site's link (new customers) |
1 × 25 mg | $89.00 $30 off through this site's link (new customers) |
$3.56 | Buy |
Simple Peptide #25 by metascore · US, FL 33446 |
Metascore 83Finnrick 62%PepIndex 82/100Bought vials 100% of label · 44 testsTitrateLabLab 99.1% pure · 103% of labelOnline checkout |
MK-677 12.5 mg | 1 × 12.5 mg | $249.00 | $19.92 | Buy |
Mixing a 12.5 mg vial
What each common amount of bacteriostatic water gives you on a U-100 insulin syringe. Pick a vial size above to change it.
| Water | Strength | Per 10 units (0.1 mL) | Per unit |
|---|---|---|---|
| 1 mL | 12.5 mg/mL | 1,250 mcg | 125 mcg |
| 2 mL | 6.25 mg/mL | 625 mcg | 62.5 mcg |
| 3 mL | 4.167 mg/mL | 416.7 mcg | 41.67 mcg |
| 5 mL | 2.5 mg/mL | 250 mcg | 25 mcg |
Published lab results
2 certificates of analysis that vendors publish for Ibutamoren (MK-677). Numbers are only filled in where the document is readable text; image-only COAs are linked without numbers. A vendor's own COA shows one tested sample, not every batch.
| Vendor | Lab | Date | Label | Measured | Purity | Batch | |
|---|---|---|---|---|---|---|---|
Simple Peptide |
Freedom Diagnostics | 2026-05-20 | 12.5 mg | 12.9 mg 103% | 99.12% | MK677-05182026-7 (FD #2605190275, client 'Simple Peptide') | View |
NextechLabs |
Vanguard Laboratory | – | – | – | – | V251008-24 | View (image) |
Discussions elsewhere
Experiences and questions about Ibutamoren (MK-677) on other sites. Treat anecdotes with care.
Ibutamoren (MK-677): questions people ask
What is Ibutamoren (MK-677)?
Oral growth hormone secretagogue (small molecule). A non-peptide ghrelin-receptor agonist that raises GH and IGF-1 levels for 24 hours after an oral dose; studied for muscle wasting and GH deficiency, with increased appetite and blood sugar as side effects.
How much does Ibutamoren (MK-677) cost?
The cheapest Ibutamoren (MK-677) from an independently tested vendor is $0.113 per mg (Simple Peptide, MK-677, $85.00). Across 3 listings from 2 vendors the median is $3.56 per mg.
Where can I buy Ibutamoren (MK-677)?
2 vendors tested by Finnrick sell Ibutamoren (MK-677). The cheapest per mg right now: Simple Peptide ($0.113), Modern Aminos ($3.56). 1 of them publish a lab report (COA) for Ibutamoren (MK-677); compare lab scores and reports in the table above before buying.
Is Ibutamoren (MK-677) FDA approved?
Never approved; research chemical only.
Can Ibutamoren (MK-677) be compounded in the US?
On FDA's Category 2 list for 503A and 503B (potential heart-failure signal): it can't be compounded. Compounding status for every peptide.