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MK-2866 (Ostarine), 15 mg

4.75 out of 5
(536 customer reviews)




MK-2866 (Ostarine) Research Profile:


Description: 1st gen SARM, very common, very versatile. Moderate, consistent effects on muscle and strength gains. "Injury assist" SARM with positive effects on bone, ligaments, tendons.

Known for: Injury recovery, mild anabolic, versatility

Commonly stacked with: Synergistic effects with other SARMs or stack

Side-effects: Very few reports of adverse side-effects


MK-2866 (Ostarine) Chemical Profile:

Clinical data

Selective Androgen Receptor Modulator
Enobosarm, Ostarine, GTx-024, MK-2866, S-22
By mouth
US: Investigational New Drug
GTx, Merck & Co.

Pharmacokinetic data

24 hours


((2S)-3-(4-cyanophenoxy)-N- [4-cyano-3-(trifluoromethyl)phenyl] -2-hydroxy-2-methylpropanamide)

Chemical and physical data

389.33 g/mol
132 to 136 ยฐC (270 to 277 ยฐF)
O=C(NC1=CC=C(C#N)C(C(F)(F)F)=C1) [C@](C)(O)COC2=CC=C(C#N)C=C2
1S/C19H14F3N3O3/ c1-18(27,11-28-15-6-2-12(9-23) 3-7-15)17(26)25-14-5-4-13(10-24) 16(8-14)19(20,21)22/h2-8, 27H,11H2,1H3,(H,25,26)/t18-/m0/s1


* These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Selective Androgen Receptor Modulators (SARMs) have not been approved in the US by the FDA for human consumption as dietary supplements. In accordance with US laws pertaining to the use of Investigational New Drugs (IND's) products labeled as SARMs on this website are sold for laboratory and clinical research purposes only, are intended solely for investigational use, and are to be used exclusively for purposes of a clinical trial that is the subject of an effective investigational new drug application; otherwise, you are not authorized to purchase our products. By using this site and/or purchasing our products, you certify you and/or your organization is/are qualified to possess, handle, and administer the products you purchase, that SARMTECH and its owners/agents are not liable for any unintended effects or outcomes, and that you are 21 years of age or older.


536 reviews for MK-2866 (Ostarine), 15 mg

  1. 5 out of 5

    Todd Gardner (verified owner)


  2. 4 out of 5

    steven heisler (verified owner)

    I have been ordering for Sarmtech for 3 years/#1,#2,#3 in every category

  3. 5 out of 5

    Tim R. (verified owner)

    Definitely works!

  4. 5 out of 5

    Anonymous (verified owner)


  5. 5 out of 5

    Reynaldo Tirado (verified owner)

    You can see results in a couple of weeks.

  6. 5 out of 5

    Jamie (verified owner)

    Strength gains through the roof. Great quality, great price and great service.

  7. 4 out of 5

    Matthew Stamm (verified owner)


  8. 1 out of 5

    Joshua H. (verified owner)

    Sadly after taking two pills everyday until the bottle was gone I noticed no difference besides holding a little extra water weight.

  9. 5 out of 5

    Ben F. (verified owner)

    Good product, takes about 3 weeks for it to kick in. Joints feel better and strength is progressing

  10. 5 out of 5

    David S. (verified owner)

    Research subject has experienced 90% relief from neck pain.

  11. 5 out of 5

    andrew urso (verified owner)

    Works good

  12. 5 out of 5

    David Modlin

    Been researching for about 10 days and there has been a noticeable drop in tendonitis pain suffered in both forearms.

  13. 5 out of 5

    Austin Butler (verified owner)

    Loving it so far. 1 month in and bench has increased for my research. Love the products

  14. 5 out of 5

    David Nisanov

    Stacked with rad140, really leaning out my research subject

  15. 5 out of 5

    Mark (verified owner)

    The real deal. Great stack with lgd and mk6!

  16. 5 out of 5

    Dgoodsell (verified owner)

    Good mild SARM to take

  17. 5 out of 5



  18. 5 out of 5

    jayvazq (verified owner)

    Research subject made incredible progress. Mass and muscle has significantly increased.

  19. 5 out of 5

    Liliane Moscagiuri (verified owner)

    Great product for your female research subject.๐Ÿ‘ Legit

  20. 5 out of 5

    Aaron Abbott (verified owner)

    Great product

  21. 5 out of 5

    Michael Gelsomini (verified owner)

    Great product

  22. 5 out of 5

    Kyle Mackzum (verified owner)

    Lost no strength and tons of fat during my cut. Did exactly what it was supposed to

  23. 5 out of 5

    Sammy Maniaci (verified owner)

    Research showed that a cycle of Ostarine, resulted in fat loss, (10lbs), and muscle hardness with definition.

  24. 5 out of 5

    Patrick Morris


  25. 5 out of 5

    Patrick Morris

    Great Product

  26. 5 out of 5

    Lorne Abbett (verified owner)

    Excellent product, subject uses during Sarms stack and 15 mg a day with 10 mg of Cardarine during PCT. great results for recovery.

  27. 5 out of 5

    Cerosa (verified owner)

    Excellent product. Good results.

  28. 5 out of 5

    Bsfstr2 (verified owner)

    Premium stuff – recommend this product highly

  29. 5 out of 5

    eXpla1n (verified owner)

    Love this

  30. 5 out of 5

    Cameron Krager (verified owner)

    Amazing results. 10/10 recommended!

  31. 5 out of 5

    Chad Mayeran (verified owner)


  32. 5 out of 5

    nagorniak1 (verified owner)

    Great product! Great company! Great customer service!

  33. 5 out of 5

    Tommy Chay (verified owner)

    Strength and Lean massed noticeable throughout cycle

  34. 5 out of 5

    Christine Esparza (verified owner)


  35. 5 out of 5

    Fernando Lobos (verified owner)

    I received my Ostarine four days ago, and subject felt very nice of my shoulder injury, pain is definitely getting away! As for strength, endurance and muscles, I still need to wait some days, I will edit my comment and let you all know if worked or not, subject felt biceps curl a bit easier, but must be placebo now.

  36. 5 out of 5

    Brandon Henderson (verified owner)

    great healing

  37. 5 out of 5

    Anthony Molden (verified owner)

    Saw results pretty quickly, only used for one cycle.

  38. 5 out of 5

    louis warner (verified owner)

    Strength gains came in strong, hitting groups 1-2x a week. Really does the job!

  39. 5 out of 5

    Mjjc5291 (verified owner)

    Lean muscle mass gain while recovery time was cut in half. Strength was slightly increased and body fat went down slightly. Would recommend for those who are looking to Recomp/would recommend pct after using this product. Very strong compared to other companies!

  40. 5 out of 5

    Ariel Perisa (verified owner)

    Im very satsified with the product.
    Lab subject was very skinny, but this SARM helped achieve alot in an 8 month cycle. There are no bad side effect at all, just improvements in strength, phisique, and also some mental health benefits.

  41. 5 out of 5

    Christian Loth (verified owner)

    Got this two weeks ago and it seems to be doing me well so far

  42. 5 out of 5

    Kirk Townsend (verified owner)

    Only the best from Sarmtech. Been using their product from the beginning always great results.

  43. 5 out of 5

    Martin Jacobsen (verified owner)

    increase in strength i like it

  44. 5 out of 5

    Shahin Gharagozlu

    Subject takes it as a preworkout and it gives awesome pumps

  45. 5 out of 5

    GAB YONG KIM (verified owner)

    Hamstring Strengthening Best.

  46. 5 out of 5

    Srisri Gokanapudy (verified owner)

    Good product that helps lab subjects lose fat and gain muscle

  47. 5 out of 5

    andrew urso (verified owner)

    Made my lab subject ripped up like rambo

  48. 5 out of 5

    Guillermo Ramirez (verified owner)

    Great product

  49. 5 out of 5

    Patrick Morris

    Amazing product! Works as well as advertised!

  50. 5 out of 5

    Justin P (verified owner)

    On second cycle with great results.

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MK-2866 (Ostarine), 15 mg