Welcome - status
Share your Referral Link, earn up to $40
FREE U.S. Shipping
SAME-DAY Shipping - orders in by 5pm ET
Save 25% with SARMTECH Stacks
Discreet Packaging
FREE PCT & Test Booster with any 2 SARMs
15 Reasons
All prices in USD
Stealth Shipping & Ins. available for orders < $400
Referred by

MK-2866 (Ostarine), 15 mg

4.75 out of 5
(555 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.


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

  1. 4 out of 5


    Subject was able to make a substantial cut while on this compound, only complaint was that the results were underwhelming, but in return subject had zero side affects.

  2. 5 out of 5

    Brandon Cook

    The best overall sarm.

  3. 5 out of 5

    hsw400 (verified owner)

    Reliable. It Works!

  4. 5 out of 5

    Bryce Bowman (verified owner)

    Test subject was having issues with Low T and muscle recovery. Within just two weeks of taking prescribed dose of Ostarine once a day, subject noticed substantial improvement in muscle recovery and overall decrease in duration of DOMS following intense weight lifting. Great product!

  5. 5 out of 5

    D-Lab-Rat (verified owner)

    [Subject’s] old injuries see improvements .

  6. 5 out of 5



  7. 5 out of 5

    jayvazq (verified owner)

    High quality!!

  8. 5 out of 5

    Tanner Martin (verified owner)

    Lab specimens are noticing great pumps and workout intensity in all workouts. Started out the 15mg doses and bumped up to 30mg doses. Noticed no side effects. Stuff is legit and great service from company.

  9. 5 out of 5

    Damario Nazarino-Celis (verified owner)

    Good quality MK677! The REM sleep and appetite increase is very noticeable.

  10. 5 out of 5

    Derek Sawyer (verified owner)

    Great product and great service!

  11. 5 out of 5

    Andrew Sorci (verified owner)

    This is a great product that really works. Sarmtech is legit and so are there products.

  12. 5 out of 5

    Jordan Wright

    [Subject] Had no side effects and ran a full 3 month cycle. [Subject] did the RAD-140 stack and put on 30 pounds with working out 5 days a week and eating healthy 3000 calories a day!

  13. 5 out of 5

    Aaron Abbott (verified owner)

    Love it

  14. 5 out of 5

    Scott Michael

    Great product! Works as described!

  15. 5 out of 5

    Mark White

    Great all-around product. Subject experienced notable strength and mass gains. Will be doing further research.

  16. 5 out of 5

    Michael Alley

    This stuff is amazing!!!! No side effects whatsoever for [my subject]!

  17. 5 out of 5

    Jason Arseneault (verified owner)

    this sarms was not for me but for my [female research subject], in 2 and a half months she could lift 5 times more than before! at first she was afraid it was going to be too strong but she never notice any negative side effects. I recommend it to everyone

  18. 5 out of 5

    Cory Louria (verified owner)

    [Subject] Felt stronger after a week.

  19. 5 out of 5

    Liam Davies (verified owner)

    Simply amazing!!! This product works really well. [Subject] put on some lean muscle which was really noticeable. Ran this first with cardarine as well. Strength just took a big leap from the get go.

  20. 5 out of 5

    Daniel Wood (verified owner)

    Only third way through my research and already seeing great development in aesthetics and performance. Brilliantly packaged to Australia (descreet postage option) and arrived in decent time (about 3 weeks from date I payed)

  21. 5 out of 5

    Tyran Jarman

    Quality product & excellent service.

  22. 5 out of 5

    yang fang

    I am very satisfied with the service provided by SARMTECH because of its lightning speed and fast delivery, and safe transportation service. In addition, the payment method is also my favorite, which is simple and convenient. In addition, I am impressed by the company’s product quality and intact packaging. Big love SARMTECH!

  23. 4 out of 5


    So far so good, massive strength increase and noticeable size gains. Started at 1 capsule and moved to 2.

  24. 5 out of 5

    Patrick Morris

    Great product! Would highly recommend!

  25. 5 out of 5

    Craig VanDeWeg

    I am 6 weeks into my Ostarine stack and [subject] 4% down in body fat and weight is up 7 lbs. Also, with all [subject’s] little nagging injuries and shoulder issue has healed up and I believe it is due to the Ostarine. I plan on running this for 6 more weeks at 30mg take 30 days off then hop back on in the spring to lean out!

  26. 5 out of 5

    Timothy Coffman (verified owner)

    [Research subject] saw a fast increase in muscle while working out in about a month

  27. 5 out of 5

    Provcaps11 (verified owner)

    The best

  28. 5 out of 5

    Jack Smothers (verified owner)

    Nice increase of lean muscle. Feels good the test subject said.

  29. 5 out of 5

    Derek Johnson (verified owner)

    Joints felt great. Increased lean muscle. Decreased fat. Great product with fast shipping!

  30. 5 out of 5

    Guillermo Ramirez (verified owner)

    i made the purchase from uruguay and it arrived in perfect condition after 24 days, also got very good results

  31. 5 out of 5

    Junseok Lee (verified owner)

    Very well organized product. Great results just over 2 months of running it. I had decent diet and workout plan and this product was the icing on the cake !

  32. 5 out of 5


    Solid MK2, lots of capsules – longer cycle for same $

  33. 5 out of 5

    Kirk Townsend (verified owner)

    Ostarine is great for an after cycle of other sarms. Keeps your gains.

  34. 5 out of 5

    OrlandoJugg (verified owner)

    Helped retain muscle through weight loss, good for cutting will definitely use again

  35. 5 out of 5

    JJ (verified owner)

    Knees and shoulders 100% better!

  36. 5 out of 5

    Christian Loth (verified owner)

    noticing an increase in lean muscle mass. legit stuff

  37. 3 out of 5

    Michael Venable (verified owner)

    Pros: Supplement increased lean muscle mass. Decreased body fat %
    Cons: DECREASED HDL (good cholesterol by about half) and slightly inflamed the liver. Recommend getting blood work prior and after cycle to see the effects.

  38. 5 out of 5

    Justin Shaw (verified owner)

    Amazing recovery. Test subjects joints seem to feel much better. Stacks well with other sarms.

  39. 5 out of 5

    James Harrington (verified owner)

    Works as advertised, very mild but noticeable gains.

  40. 5 out of 5

    Chris Crawford

    Worked great helped keep these beat up joints working smooth.

  41. 5 out of 5

    Christian Loth (verified owner)

    Doing exactly what it’s supposed to do. Great stuff.

  42. 5 out of 5

    Terrance VanDyke (verified owner)

    Ok I’m a believer.

  43. 5 out of 5

    andrew urso (verified owner)

    Works great

  44. 5 out of 5

    Tyran Jarman

    Fast delivery and quality product that delivers results 👌

  45. 5 out of 5

    Mark Seville (verified owner)

    Low dose on this for about 8 months, basically a permanent injury repair and prevention drug. Knees doing great! Esp at 50!

  46. 5 out of 5

    andrew urso (verified owner)

    Made my mushroom tip grow

  47. 5 out of 5

    Megan & Shane (verified owner)

    Just into it a week so too early to tell but have to say I like the way you guys operate. I accidentally paid twice and you caught it and refunded me. I downloaded Cash App but seemed like I was doing something wrong so I switched to Zelle and paid that way, only to find out (from you) the cash app DID go through. Thanks for emailing me about it and taking such good care of your customers!!! It was $142 and seriously I NEVER would have even looked twice.

  48. 5 out of 5

    Tommy Chay (verified owner)

    Amazing product!! Lean muscle noticeable !!

  49. 5 out of 5

    Tampa Lifter

    Best for recovery. Research subject feels amazing. Took it coming off of surgery and I truly believe it helped so much with the recovery process as well as the strengthening of all ligaments and tendons. Joints felt amazing. Wondering how great it would feel with prolonged use (longer than 2 weeks). Highly recommend!

  50. 5 out of 5

    Josh Fredieu (verified owner)

    Main effects noticed were increase in lean muscle and decrease in overall weight. Noticed an increase in strength with all main lifts. Also no joint discomfort which has happened on certain supps. Overall great “background” compound to give a little extra edge when following a consistent diet and exercise plan.

Add a review

All SARMs are Triple-Lab Certified

MK-2866 Ostarine SARM Capsules
MK-2866 Ostarine SARM Capsules
Jano MK-2866 Third Party Lab Test
Jano MK-2866 Third Party Lab Test
MZ Biolabs MK-2866 Third Party Lab Test 2020-11-14
MZ Biolabs MK-2866 Third Party Lab Test 2020-11-14
Jano MK2866 Ostarine Third Party Lab Test
Jano MK2866 Ostarine Third Party Lab Test
COA - MK2866
COA – MK2866 Lab Test
MK-2866 Ostarine SARM Capsules
MK-2866 (Ostarine), 15 mg