What is MK-677?
MK-677, also known as Ibutamoren, is researched for increasing endogenous growth hormone and IGF-1 levels.
Where to Buy MK-677 Online
6 vendors in our directory currently list MK-677. The comparison shows each vendor's third-party testing status, COA availability, editorial and community ratings, and any active coupon — ordered by our directory ranking.
| Vendor | Trust signals | Editorial rating | User reviews | Coupon | Visit vendor |
|---|---|---|---|---|---|
| 4.9Rated 4.9 out of 5 | No user reviews | — | Visit site | |
| 4.9Rated 4.9 out of 5 | No user reviews | — | Visit site | |
| 4.4Rated 4.4 out of 5 | No user reviews | — | Visit site | |
| 4.3Rated 4.3 out of 5 | No user reviews | — | Visit site | |
| 4.1Rated 4.1 out of 5 | No user reviews | — | Visit site | |
| 3.2Rated 3.2 out of 5 | No user reviews | — | Visit site |
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Mechanism of Action
It activates ghrelin receptors, stimulating GH release and appetite.
Clinical Research
Cited studies
Researched Benefits
Research on MK-677 has focused on the following areas:
- Oral growth hormone secretagogue researched for raising GH and IGF-1 levels
- May support increases in lean body mass, strength, and bone density in studies
- Investigated for enhancing sleep quality, recovery, and overall body composition
Side Effects & Safety
Adverse reactions and limitations documented for MK-677 include:
- Increased appetite
- Water retention
