Ostarine (MK-2866)


DOSAGE: 15mg/Pill



Also recognized as MK 2866, Enobasarm, or GTX-024, Ostarine is a widely acclaimed SARM (selective androgen receptor modulator). Initially developed to address muscle wasting and osteoporosis concerns, Ostarine has gained popularity among athletes as a performance enhancer for a competitive advantage.

Ostarine functions by selectively binding to androgen receptors, similar to anabolic steroids, but with significantly fewer side effects.

Clinical Studies:

A 12-week double-blind placebo-controlled Phase II clinical trial highlighted Ostarine’s ability to increase lean muscle mass and enhance physical function without the adverse effects seen with testosterone or other steroids.

Medical Uses:

Primarily designed for treating muscle wasting and osteoporosis, Ostarine also retains nitrogen and strengthens joints, showcasing its versatility in promoting overall health.

Athletic Uses:

Ostarine mimics the effects of anabolic steroids with minimal side effects and nearly negligible suppression. Blood work has indicated a modest 10-20% suppression of the HPTA (hypothalamic pituitary testicular axis) compared to the significant 95% seen with anabolic steroids. Consequently, Ostarine is suitable not only for cycles but also for post-cycle therapy (PCT) and bridging phases, making it a versatile compound for athletes. Women find Ostarine a safer alternative to anabolic steroids due to its avoidance of masculine traits.

Healing Abilities:

Ostarine’s notable ability to strengthen bones and joints makes it popular among bodybuilders and powerlifters. It addresses common athletic injuries, such as forearm or shin splints, neck pain, joint pain, and back pain, by increasing tendon and ligament strength, along with bone density.


Despite the World Anti-Doping Agency’s (WADA) ban on all SARMs, including Ostarine, some athletes, like Russian champion cyclist Nikita Novikov, have faced suspensions for its use.


Ostarine can be stacked for various objectives:

  1. Endurance: Stacking with cardarine enhances endurance before workouts or runs.
  2. Anabolic steroid stack: Ostarine complements existing steroid cycles, fostering lean muscle mass and strength without additional side effects.
  3. During PCT or bridge: Its minimal suppressive nature makes Ostarine suitable for post-cycle therapy or bridging phases.
  4. SARMs triple stack: For recomping, Ostarine combines well with andarine and cardarine.

Side Effects:

Ostarine is non-liver toxic and does not induce blood pressure or organ strain. However, some users reported gynecomastia at high dosages over extended periods, suggesting the use of an aromatase inhibitor. While non-suppressive at proper dosages for up to 4 weeks, longer and higher-dosage use may require a PCT.

Half-life, Use, and Dosage:

Ostarine boasts a robust 24-hour half-life, necessitating only once-daily dosage. The liquid form should be promptly swallowed, and it is advised not to hold it under the tongue or mix it in a cup to prevent loss. Dosages typically range from 12.5-50 mg per day, with lower dosages catering to healing purposes and higher dosages for recomping and muscle mass gain.

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