YK-11 is a unique anabolic compound that has attracted considerable attention among people interested in muscle growth, strength, and the biology of muscle development. Its appeal comes largely from its reported effects on androgen-receptor signaling and the follistatin–myostatin pathway, which plays an important role in regulating muscle growth.

Product Information

YK-11 is commonly described as a SARM-like compound and has been investigated for its effects on muscle-cell differentiation. Unlike many compounds in this category, YK-11 has generated particular interest because of research showing an increase in follistatin, a protein involved in regulating myostatin activity.

How It Works

YK-11 interacts with androgen-receptor pathways and has been shown in laboratory research to increase follistatin expression. Because follistatin can counteract myostatin, this pathway has become one of the main reasons YK-11 is associated with muscle-growth research.

Potential Benefits

1. Muscle Growth Support

YK-11 is primarily known for its anabolic potential and its ability to influence pathways involved in muscle development.

2. Follistatin Activation

Research has found that YK-11 can increase follistatin expression, making this one of its most distinctive characteristics.

3. Myostatin Pathway Research

The relationship between YK-11, follistatin, and myostatin makes it particularly interesting for researchers studying muscle-growth regulation.

4. Muscle Differentiation

Laboratory research has shown YK-11 can promote differentiation of muscle precursor cells and increase expression of key myogenic factors.

5. Muscle-Wasting Research

Animal research has also investigated YK-11 in models of muscle wasting, with findings involving myostatin, inflammatory signaling, and muscle preservation.

Dosage

There is no established clinical dosage for YK-11. Dosing amounts circulated online are based largely on anecdotal use rather than established human clinical research, so they should not be treated as medically validated dosing.

Side Effects

Potential concerns associated with YK-11 and androgenic compounds include hormonal suppression, changes in cholesterol, acne, hair loss, mood changes, and possible liver-related effects. The long-term human safety profile remains poorly characterized.

Where to Buy YK-11 Injectable

BehemothLabz does not sell this product. Purchase links on this page may direct you to third-party suppliers through affiliate links.

References

Kanno Y, Ota R, Someya K, Kusakabe T, Kato K, Inouye Y. Selective androgen receptor modulator, YK11, regulates myogenic differentiation of C2C12 myoblasts by follistatin expression. Biological & Pharmaceutical Bulletin. 2013;36(9):1460-1465. PMID: 23995658. PubMed

Lee SJ, Gharbi A, Shin JE, Jung ID, Park YM. Myostatin inhibitor YK11 as a preventative health supplement for bacterial sepsis. Biochemical and Biophysical Research Communications. 2021;543:1-7. PMID: 33588136. PubMed