MK-677 (Ibutamoren) Capsules

Buy MK-677 (Ibutamoren) Online

MK-677, also known as Ibutamoren, is an oral growth hormone secretagogue studied for its ability to increase growth hormone (GH) and IGF-1 levels. It has attracted significant interest in research involving body composition, recovery, muscle mass, and metabolic function.

Product Information

MK-677 is a non-peptide compound that acts as a ghrelin-receptor agonist. Human studies have shown that it can increase GH, IGF-1, and IGF-binding protein-3 levels, with research also reporting changes in fat-free mass and energy expenditure.

How It Works

MK-677 stimulates the ghrelin receptor, which increases the body's release of growth hormone. The resulting increase in GH signaling can also raise IGF-1, a hormone involved in muscle, bone, and tissue-growth pathways.

POTENTIAL BENEFITS

1. Supports Growth Hormone Research

MK-677 has demonstrated sustained increases in GH secretion in human studies. This makes it particularly interesting for research involving growth-hormone-related physiology.

2. Increased IGF-1 Activity

Studies have shown that MK-677 increases circulating IGF-1 levels. IGF-1 plays an important role in anabolic signaling, tissue growth, and recovery processes.

3. Lean-Mass Research

Clinical research has reported increases in fat-free mass during MK-677 administration. This has made the compound particularly popular in body-composition research.

4. Metabolic Research

MK-677 has also been studied for its effects on energy expenditure and glucose metabolism, providing researchers with a broader picture of how GH secretagogues influence metabolic function.

Dosage

Clinical research has used different experimental doses of MK-677, while online bodybuilding communities commonly discuss once-daily oral use. There is no universally established dosage for performance, muscle-building or general wellness purposes. Research doses should not automatically be treated as an appropriate personal regimen.

Side Effects

Reported effects include increased appetite, edema/fluid retention, muscle discomfort, and changes in glucose regulation. A recent case report also described liver injury associated with MK-677 use.

References

• Nass R, et al. Two-month treatment of obese subjects with the oral growth hormone (GH) secretagogue MK-677 increases GH secretion, fat-free mass, and energy expenditure. Journal of Clinical Endocrinology & Metabolism. 1998. 9467542
• Nass R, et al. Effects of oral administration of ibutamoren mesylate, a nonpeptide growth hormone secretagogue, on the growth hormone-insulin-like growth factor I axis in growth hormone-deficient children. Journal of Clinical Endocrinology & Metabolism. 2001. 11452249
• Hepatotoxicity induced by MK-677. BMJ Case Reports. 2025. 40675653

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