YK-11 Research Guide

Full name: YK-11 (Myostatin Inhibitor / SARM)

A synthetic steroidal compound classified as both a SARM and a myostatin inhibitor. Combines AR partial agonism with follistatin induction.

How YK-11 Works

Partial androgen receptor agonist that induces follistatin expression, creating dual myostatin inhibition and AR activation.

Dosing Protocol

• Typical dose: 5-10 mg
• Frequency: Once daily
• Duration: 6-8 weeks
• Route: Oral

Reported Benefits

• Dual anabolic mechanism
• Follistatin induction
• Oral convenience
• Muscle hardening

Potential Side Effects

• Liver stress potential
• Testosterone suppression
• Joint dryness
• Hair shedding risk

Research Citations

1. YK-11 follistatin induction in myocytes (2018) - Increased follistatin expression 4-5x in C2C12 cells, exceeding effects of DHT.
2. Selective AR modulation by YK-11 (2019) - Tissue-selective anabolic activity with minimal androgenic effects on prostate.

Related Muscle Growth Compounds

• Follistatin 344 - Full Profile
• ACE-031 - Full Profile
• IGF-1 LR3 - Full Profile
• MGF (Mechano Growth Factor) - Full Profile
• Myostatin Inhibitor - Full Profile
• LGD-4033 - Full Profile

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