Injectable YK-11

Injectable YK-11 (50 mg/mL) is a research-grade myostatin-modulating SARM-like compound investigated for its potential to enhance muscle hypertrophy, strength, and bone density in experimental models. It is typically explored in vitro and in vivo for its dual action on androgen receptors and follistatin expression, making it a candidate for studies on accelerated lean mass accrual and musculoskeletal regeneration.​

Theoretical Research Benefits

• Myostatin inhibition and follistatin upregulation: YK-11 has been reported in preliminary research to increase follistatin, a myostatin-binding protein, which may promote greater muscle fiber growth compared with standard anabolic stimuli in experimental systems.​

• Selective androgen receptor modulation: In cell-based models, YK-11 appears to act as a partial androgen receptor agonist, supporting investigations into site-selective anabolic signaling with potentially less impact on non-muscle tissues than traditional androgens.​

• Bone and functional performance: Early-stage work suggests possible benefits for osteoblast activity and functional strength endpoints, positioning YK-11 for further study in sarcopenia, cachexia, and orthopedic recovery models.​

For research purposes only. Not intended for human consumption, medical use, or veterinary use.​