Ostarine, also known as MK-2866, is a selective androgen receptor modulator—or SARM—designed to help build and preserve lean muscle mass. It works by binding to androgen receptors in muscle tissue, triggering anabolic activity without the harsh side effects of traditional steroids. Ostarine is especially popular for its ability to support recovery from injuries by promoting muscle regeneration and strengthening bones and joints. Whether you're coming back from an injury or just want to protect your gains during a cut, Ostarine offers a targeted solution with minimal risk. Safe, effective, and backed by research—it’s a go-to for smart recovery and performance.