What Is YK11?

YK-11 is a Selective Androgen Receptor Modulator (SARM).

Although YK-11 does not act as an agonist towards the prostate, it does carry with it a similar effect to causing stress on the liver. This is due to the 4 methyl (CH3) groups in its structure. Supplements like Milk Thistle help aide and mitigate the effects.

Application Of YK11

Research from YK-11 studies suggests it has “anabolic effects on bone mineral density and skeletal muscle mass.”*
“YK11 treatment…induced the expression of follistatin.”*
“Follistatin has emerged as a powerful antagonist of myostatin that can increase muscle mass and strength. Our translational studies show increased muscle size and strength in species ranging from mice to monkeys.”*
These studies suggest, at approximate doses of 5mg, mice and monkeys can see SIGNIFICANT increases in muscle mass.
*The information here is intended for educational and informational purposes only. THIS PRODUCT IS INTENDED FOR RESEARCH USE ONLY.


See our latest HPLC-Assay: Concentration (3rd party lab test) on YK-11

1 bottle (30mL) of YK-11, Myostine, dosed at 10mg/mL (newly increased dose):

  • Increase Muscle Tissue
  • Increase Power
  • Neuroprotective
  • Cell Age Reducing
  • Myostatin Inhibition

Stacks well with:

MK-677, RAD140, S-23, LGD-4033.