What is Ostarine? Ostarine (MK-2866) is one of the most common types of selective androgen receptor modulators (SARMs) – a class of chemical compound that has the potential to treat multiple diseases, as well as help with strength, muscle mass and endurance. Ostarine, also known as enobosarm or MK-2866, was developed in 1997 by a pharmaceutical company, and has been the subject of multiple medical trials, as well as some controversy in professional sports. It is now widely used as a safer...



