Ostarine , also known as MK-2866, is an investigational selective androgen receptor modulator (SARM) developed by GTx, Inc. for the treatment of conditions such as muscle wasting and osteoporosis, formerly under development by Merck & Company.

Chemistry

According to a 2009 paper authored by GTx, "Readers are cautioned to note that the name ostarine is often mistakenly linked to the chemical structure of, which is also known as andarine. The chemical structure of ostarine has not been publicly disclosed."A 2009 review stated "Recently, GTx disclosed that compound 5 had advanced into clinical trials. The patent application described detailed data in an initial proof-of-concept Phase IIa clinical trial. It is not explicitly stated that compound 5 is Ostarine (MK-2866).

As of 2012, the mechanism of action of Enobosarm is still being debated and requires further investigation.

Health risks

Similar to anabolic steroids, Ostarine can help achieve significant muscle gains. However, its safety profile is significantly better compared to steroids. Ostarine has significantly fewer dangerous and undesirable side effects, and the potential health risks are many times lower than those that can be caused by steroid use. Therefore, Ostarine is often used (abused) by bodybuilders, athletes and people who are trying to achieve a muscular figure, want to achieve similar results as when using anabolic steroids, but also want eliminate / minimize possible unwanted side effects. 

Here, we consider it necessary to emphasize that Ostarine is not an approved nutritional supplement or stimulant for athletes. It is an experimental substance that is still under investigation, its long-term effects are not yet fully known and further research is needed. Keep in mind that Ostarine, like all our other products, is sold solely for scientific and research clinical use.

Advantages of Ostarine Compared to Anabolic Androgenic Steroids

Ostarine (MK-2866) is selective and primarily aimed at acting in muscles and bones. Due to this selectivity, unlike anabolic steroids, it does not cause strong androgenic negative effects on other organs

Similar to anabolic steroids, Ostarine can help achieve significant muscle gains, but has significantly fewer dangerous and undesirable side effects, and the potential health risks are many times lower than those that can be caused by steroid use:

Ostarine does not convert on Estrogens or Dihydrotestosterone;

Ostarine does not cause Gynecomastia;

Ostarine does not cause significant retention of water and salts;

Ostarine does not cause increased Cortisol and Estrogen levels;

Ostarine does not present a heavy load to the Liver;

Ostarine does not cause prostate enlargement;

Ostarine does not cause kidney disease;

Ostarine does not cause acne and oily skin;

Ostarine does not cause hair loss and baldness;

Ostarine does not cause swollen face.