YK-11 is a synthetic steroidal selective androgen receptor modulator (SARM).It is a gene-selective partial agonist of the androgen receptor (AR) and does not induce the physical interaction between the NTD/AF1 and LBD/AF2 (known as the N/C interaction), which is required for full transactivation of the AR.

Discovery

YK11 was first discovered in 2009 by Japanese scientist Yoshimura Kotera and originally developed by a Japanese pharmaceutical company.

Benefits of YK 11

Gain lean muscle mass in just a few weeks;

Rapid strength gains and raised energy levels;

Improved performance levels and faster recovery;

Increased HGH levels;

Quick fat loss and body fat reduction

Mechanism of action

YK11 binds to the androgen receptor with an affinity similar to that of testosterone. Unlike traditional SARMs, YK11 targets both anabolic and androgenic receptors, making it ideal for those looking to gain lean muscle mass while also reducing body fat.

In animal studies, YK11 was shown to increase bone density and all round bone health. It also showed increased muscle mass and muscle strength while also reducing fat mass.

While human studies are still being completed, these findings suggest that YK11 could be an effective treatment for a variety of conditions, including muscle wasting, osteoporosis, and obesity.