Dual Mechanism • Cell Studies Only • Steroidal SARM

YK-11: The Myostatin Inhibitor SARM

By , HighPeptides Editor

Unique dual mechanism: SARM + myostatin inhibitor via follistatin induction. Only cell study data exists — NO animal or human trials published. Steroidal structure from DHT raises hepatotoxicity concerns. Here's what's known.

0
Common Research Dose
(Daily)
0
Human Trial Data
(None Published)
Dual
Mechanism
SARM + Myostatin
📋 On this page
  1. How YK-11 Works
  2. Side Effects & Risks
  3. Key Takeaways
  4. 🔬 Verified Research Source
  5. 🛒 Recommended Products
  6. More SARM Research
⚠️ WARNING: No Human Data

YK-11 has ZERO published animal or human trials. Only cell culture (in vitro) studies exist. All "data" you see is either cell study results or anecdotal user reports. It is NOT a well-researched compound.

All SARMs are banned by WADA. Not FDA approved. This page is for educational purposes only.

NO HUMAN TRIALS WADA BANNED

Mechanism

How YK-11 Works

Unique dual mechanism: partial SARM agonist + follistatin inducer (myostatin inhibitor). Steroidal structure from DHT differentiates it from non-steroidal SARMs.

🧬
Dual SARM + Myostatin Inhibitor
Induces follistatin expression in muscle cells, which blocks myostatin (the muscle growth inhibitor). This dual action theoretically provides more muscle-building potential than pure SARMs.
🧪
Cell Study Data Only
ALL published research is in vitro (cell culture). No animal studies, no human trials. Everything else is anecdotal. Claims about YK-11's effects have no controlled research backing.
🧬
Steroidal Structure (DHT Derivative)
Unlike non-steroidal SARMs (Ostarine, LGD-4033), YK-11 is a steroidal SARM derived from DHT. This raises additional concerns about 5-alpha-reduced metabolites and hepatotoxicity.
🎯
Partial AR Agonist
As a SARM, binds androgen receptors in muscle. However, as a steroidal compound, may also convert to DHT-like metabolites with traditional steroid side effect profile.
Safety

Side Effects & Risks

⚠️ Major Concerns
  • ZERO animal/human safety data
  • Unknown hepatotoxicity (steroidal structure)
  • May have traditional steroid side effects
  • 5-alpha-reduced metabolites possible
  • No quality control on research chemicals
Other Risks
  • Significant testosterone suppression likely
  • Water retention possible
  • Hair loss risk (steroidal)
  • Acne and oiliness
  • Unknown long-term effects
Bottom Line

Key Takeaways

✅ What We Know
  • Unique dual mechanism (SARM + myostatin)
  • Cell studies show follistatin induction
    • ⚠️ What We DON'T Know
    • ANY animal trial data
    • ANY human trial data
    • Safety at ANY dose
    • Long-term effects
    • Actual muscle-building potential

🔬 Verified Research Source

Third-party tested compounds from Swiss Chems — one of the most trusted research suppliers.

🧬 YK-11 Buy from Swiss Chems — Lab-tested, verified purity → Shop Now

Affiliate link — supports HighPeptides at no extra cost. All Swiss Chems products include third-party lab testing certificates.

Supplies
🛡️ TUDCALiver support for steroidal compounds🧪 NACGlutathione for liver protection💊 ZMAHormonal support
Related

More SARM Research

🔬
Ostarine Guide
Most researched SARM
💊
S-23 Guide
Strongest SARM
⚠️ Disclaimer

Educational only. YK-11 has NO human or animal trial data. Only cell studies exist. Not FDA approved. Banned by WADA. Consult healthcare provider.

Trusted Vendor

Research-Grade Peptides

Third-party tested compounds with certificates of analysis. Used by researchers worldwide.

Browse Swiss Chems →

Affiliate link — supports HighPeptides at no extra cost.