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MK-2866 (Ostarine), 15 mg

4.76 out of 5
(567 customer reviews)




MK-2866 (Ostarine) Research Profile:


Description: 1st gen SARM, very common, very versatile. Moderate, consistent effects on muscle and strength gains; cited as "injury prevention or recovery" SARM due to focused AR binding to bone and surrounding tissues.

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 °C (270 to 277 °F)
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.


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

  1. 4 out of 5

    Craig Michaels (verified owner)

    So far so good, results showing.

  2. 5 out of 5

    Duncan MacLeod (verified owner)

    The 53 year old, 5’ 10” test subject started at a flabby 216 lbs. He chose to take a single pill each morning for the experiment. His testosterone levels, were elevated at 753. After one week, he already noticed his abdominal muscles were hard for the first time in his life. He is not a bodybuilder, he was out of shape. With just a minor change in diet and a couple of moderate workouts per week, he saw impressive results at Week 6. Weight at the beginning of the experiment was 216 lbs, weight at week 6 was 196 lbs. He said it was the first time he weighed less than 200 lbs in over 20 years. He couldn’t believe he had abs, even if they were still invisible under the shrinking layer of fat. His testosterone levels at week 3 were very low (125, down 600), as might be expected in a man of his age using MK-2866. He is now on post-cycle therapy to get the testosterone numbers back into normal or even a bit high like before. Once there’s enough testosterone replaced, he’ll start another cycle. He has a prescription for Clomiphene, so hopefully it shouldn’t take too long before he can start another cycle.

  3. 5 out of 5


    Great product great results 100%percent

  4. 5 out of 5

    Dakota McNutt (verified owner)

    Helped the subject put on 10 lbs of lean muscle over 2 cycles. Noticeable strength, stamina, and mass gains.

  5. 5 out of 5

    Douglas McMinn

    this is the only pill i experimented with for a cycle… i was very impressed… didn’t see drastic results but it was noticeable…

  6. 5 out of 5

    David Tyler (verified owner)

    I’ve used SARMTECH pretty regularly and have yet to run into anything that felt bunk. They’re always on top of their game with shipping times and I’ve had great results all around. Ostarine made me feel incredible without any serious suppression.

  7. 5 out of 5

    Matthew Byrnes (verified owner)

    Subject had very noticeable improvements in joint health, muscle recovery and stamina when stacked with cardarine and ibutamoren. Very pleased overall.

  8. 5 out of 5

    Matthew Merryman (verified owner)

    Slight body recomp, joints/tendons feeling tons better and mild endurance boost. Good for stacking, and first time [researchers]. Will use in a bulk cycle next time. Good for cutting

  9. 5 out of 5

    ZhiYu Wang (verified owner)

    Subject’s favorite SARM. a reasonable amount of muscle mass and strength gain with no side effects.

  10. 5 out of 5

    LPN7 (verified owner)

    [Subject] got more strenght and stamina, only after 2 weeks. I promise You that will work for real. I also felt better in my joint. Sincerely thank you! This is High rating products for sure!

  11. 5 out of 5

    Brendon Ly (verified owner)

    Subject is really liking this sarm

  12. 5 out of 5

    Ryan Mcie (verified owner)

    Amazing Product!!! Great muscle repair!! Best used when stacking with other products.

  13. 5 out of 5

    codedre (verified owner)

    Amazing SARM standalone or in a stack! Noticeable benefits of rapid muscle repair and helps keep muscle from atrophy in a caloric deficit. Also highly recommend if you’re new to SARMs!

  14. 5 out of 5

    _CT_ (verified owner)

    Great overall experience. Test subject responded with concrete gains and only minor elevation in BP which was controlled with low dose aspirin.

  15. 5 out of 5

    Cade Lee (verified owner)

    100% legit ostarine. No side effects.

  16. 5 out of 5


    Very fast delivery to my address and fast service by email be ordering. again 100%

  17. 5 out of 5

    Ryan Bartlett (verified owner)

    Little to no negative side affects for my subject. moderate recovery benefits from 15mg per day. Will continue to run.

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MK-2866 (Ostarine), 15 mg