Ostarine (MK-2866)

Ostarine (MK-2866/Enobosarm) is a selective androgen receptor modulator (SARM) that selectively targets androgen receptors in muscle and bone tissue. It promotes protein synthesis and muscle hypertrophy with fewer side effects than traditional steroids. Originally developed for muscle wasting and osteoporosis, it can help gain muscle even during calorie deficits. NOT FDA approved and banned by WADA. Side effects include testosterone suppression at higher doses, requiring post-cycle therapy (PCT).