YK-11 (MyoStat) is a selective androgen receptor modulator (SARM), and a partial agonist at the androgen receptor.YK-11 is a unique member of the SARM group as it has the additional benefit of being a potent inhibitor of a protein called myostatin due to the significant increase in the levels of follistatin that YK-11 causes, even greater than DHT. Follistatin inhibitsmyostatin, where the action of myostatin is to inhibit various proteins and genes that induce muscle growth, thislimits muscle growth potential. Consequently YK-11 prevents this inhibition and unlocks more potential muscle growth than ever before.


YK-11 has been shown to be significantly anabolic and it is also very anti-catabolic.YK-11 is very effective in improving mass and strength gains.


99% pure pharmaceutical grade SARM

Manufactured within Australia

HPLC tested

Registered express post within Australia

Shake well before use



Due to its moderate half-life of 24 hours, the most commonly recommended dosage for YK-11 in the literature is 10 mg per day, for 8 to 12 weeks.  Shake well before use.



Keep out of direct sunlight and store in a cool dark area.