YK-11 is a synthetic peptide classified as a SARM (Selective Androgen Receptor Modulator) and a myostatin inhibitor hybrid. It is designed to enhance muscle growth and improve physical performance by selectively targeting androgen receptors in the body. As a member of the anabolic and myostatin peptide category, YK-11 has garnered attention for its potential to promote muscle hypertrophy while inhibiting myostatin, a protein that restricts muscle growth.
This peptide is notable for its dual action, combining the benefits of SARMs with myostatin inhibition, making it a subject of interest in the fields of bodybuilding and athletic performance enhancement.
YK-11 functions by binding to androgen receptors, which are crucial for muscle development and growth. When activated, these receptors stimulate anabolic processes that lead to increased muscle mass and strength.
In addition to its SARM properties, YK-11 inhibits myostatin, a protein that limits muscle growth. By reducing myostatin levels, YK-11 may allow for greater muscle development than would typically be possible, making it a unique compound in the realm of performance enhancement.
YK-11 is a unique peptide that combines the properties of a SARM with myostatin inhibition, making it a valuable compound for research into muscle growth and performance enhancement. Its dual action offers potential benefits for those studying anabolic processes and muscle regulation.
Last updated: Feb 25, 2026
ACE-031
Follistatin 344
LGD-4033
MK-2866
RAD-140
Teriparatide
S-23
Browse all Anabolic & Myostatin Peptides or work out reconstitution math with the peptide reconstitution calculator.
USD offers ranked by price per mg; offers in other currencies are listed separately below
| Store | Price | Size | Per mg | Stock | COA | Shipping | Last checked |
|---|---|---|---|---|---|---|---|
| $64.00 | 5 mg | $12.80/mg | In stock | — | — | Oct 28, 2026 |
Research-use catalog facts from published directory listings. Missing fields show as an em dash. This is not a ranking, rating, or medical recommendation.
View all 1 store selling YK-11