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MK-677 (Ibutamoren), 15 mg

4.78 out of 5
(651 customer reviews)




MK-677 (Ibutamoren) Research Profile:

dependent on stack
dependent on stack
7/10 (cutting stack)
dependent on stack

Description: Growth Hormone (GH) mimetic/secretegogue; effects include improved lean muscle generation, improved metabolism and fat oxidization; some subjects also exhibit healthier skin and sleep improvement; often ran concurrently with any SARM or Prohormone.

Known for: Mimicking effects of Growth Hormone.

Commonly stacked with: Typical bulking stack: MK-677, YK-11 and RAD-140/or/LGD-4/or/S-4/or/S-23 | optional: MK-2866,
Typical cutting stack: MK-677 and GW-501516/or/SR-9009 | optional: MK-2866

Side-effects: Some complain of lethargy, increased appetite, tingly or numb hands/fingers


MK-677 (Ibutamoren) Chemical Profile:

Clinical data

Selective Androgen Receptor Modulator MK-677, MK-0677, Ibutamoren, L-163,191, Nutrobal, Oratrope By mouth none US: Investigational New Drug Ammonett Pharma

Pharmacokinetic data

24 hours


2-amino-2-methyl-N-[1-(1-methylsulfonylspiro [2H-indole-3,4'-piperidine]-1'-yl)-1-oxo-3 -phenylmethoxypropan-2-yl]propanamide 159634-47-6 9939050 n/a 154975 GJ0EGN38UL n/a 100.236.734

Chemical and physical data

C27H36N4O5S 528.662 g/mol n/a O=S(C)(=O)N(C2)c1ccccc1C23CCN(CC3) C(=O)C(NC(=O)C(N)(C)C)COCc4ccccc4 1S/C27H36N4O5S/c1-26(2,28)25(33)29-22 (18-36-17-20-9-5-4-6-10-20)24(32)30-15-13-27 (14-16-30)19-31(37(3,34)35)23-12-8-7-11-21(23)27/ h4-12,22H,13-19,28H2,1-3H3,(H,29,33)/t22-/m1/s1 UMUPQWIGCOZEOY-JOCHJYFZSA-N


* 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.


651 reviews for MK-677 (Ibutamoren), 15 mg

  1. 5 out of 5

    Demetrius Alexander (verified owner)


  2. 5 out of 5

    JEFFREY (verified owner)

    Keeps GH pumping all day and night

  3. 5 out of 5

    Jason G. (verified owner)

    Research subject observatins:
    Days 1-5 it’s no difference at all, 15 mg doses
    Days 5-10 still noticing no difference at 15 mg doses
    Days 10-15 starting to see difference in recovery time as well as strength, 15 mg
    Days 15-30 clearly noticing differences and recovery time, strength and endurance, 30 mg
    Note, subject takes two capsules daily, one early evening and one late evening.
    At times feels hungry but that was not an issue.
    Sleep has gotten better while using this product.

  4. 5 out of 5


    Produto muito bom! Funcionou perfeitamente para o que eu queria
    (Very good product! It worked perfectly for what I wanted)

  5. 5 out of 5

    Christopher Schantz (verified owner)

    It hasn’t been long enough for the product to start working so I am only giving my review on the service I recieved.

  6. 5 out of 5

    Charles O. (verified owner)


  7. 5 out of 5

    Anthony (verified owner)

    Subject taking a stack of ligandrol/ ostarine/ ibutamoren, 1 cap of each, everyday, 30mins before wrkout while in a fasted state. Research only on for 10 days now but see definite growth and subject feels great. Would recommend this stack for peak performance.

  8. 5 out of 5

    Wesley (verified owner)


  9. 5 out of 5

    james s (verified owner)

    Awesome product, the research is going well and the product is as described. I will use this outlet again in the near future.

  10. 5 out of 5

    Corey Shelby (verified owner)


  11. 5 out of 5

    William Y. (verified owner)


  12. 5 out of 5

    tony Holmes (verified owner)

    repeat customer, need I say more an I’ll be back again

  13. 5 out of 5

    alon (verified owner)

    Amazing, a significant increase in strength

  14. 5 out of 5

    Joseph (verified owner)

    Subject showed immediate increase in water weight, hunger, numb hands and all other typical sides and benefits from true MK. I was experimenting with another brand and this one exceeds in quality, I believe. It will take months for subject to really reap the benefits but I believe this to be the best one I have experienced.

  15. 5 out of 5

    ms931878 (verified owner)

    You can tell this stuff is legit when get the side effect of numbing hands. Will buy again.

  16. 5 out of 5

    John S. (verified owner)

    Very happy with the product and service! A customer for life!

  17. 5 out of 5

    Michael (verified owner)

    Good stuff, stacked with LGD-4033.

  18. 5 out of 5

    Mike C. (verified owner)

    Massive gains

  19. 5 out of 5

    Kieran F. (verified owner)

    4 Kg in 1 month mass gain

  20. 5 out of 5

    kenneth kainz (verified owner)

    The price you pay in the quantity that you receive from this company far exceeds their competitors.

  21. 5 out of 5

    kenneth kainz (verified owner)

    I found the potency of your product to be more Superior than the others that I purchased before in the past for other suppliers.

  22. 5 out of 5

    NICHOLAS (verified owner)

    Speedier healing, better sleep, and numb hands. Great dosing for the price.

  23. 4 out of 5

    scott (verified owner)


  24. 3 out of 5

    Devin (verified owner)

    Seems good so far. Subject gained a lot of noticeable muscle mass within the first few weeks of use.

  25. 5 out of 5

    Tali Gelfond (verified owner)


  26. 5 out of 5

    Ronald Orange (verified owner)

    Excellent product will be buying more

  27. 5 out of 5

    Anonymous (verified owner)

    Again very good product. Will def buy again.

  28. 4 out of 5

    Dave Burkhart (verified owner)


  29. 5 out of 5

    Anonymous (verified owner)

    This the real deal!! First night subject took, he became extremely hungry and ate everything in the refrigerator. I added this in the later half of an ostarine study which quickly added another 8 lbs to subject after already gaining 11 lbs. I lowered dosage from 30 mg to 15 mg a day since it was slowing subject down a bit. This stuff is very potent to say the least!

  30. 5 out of 5

    Timothy (verified owner)

    Very happy with the product. Higher dosage more pills for a great price. Would buy from again. Thank You!

  31. 4 out of 5

    David D. (verified owner)

    Great! As advertised!

  32. 5 out of 5

    Anonymous (verified owner)


  33. 5 out of 5

    David D. (verified owner)

    Great product, potency as advertised!

  34. 3 out of 5

    Christopher (verified owner)

    Hey guys, my subject felt a slight difference and a little bit of a better pump when stacked with mk677 but nothing major and am a little dissappointed because it seem all the other people have such great reccomendations for these two sarms… idk if im doing it wrong because of all the other highly recommended reviews but i dont know. I was expecting alot more of a difference, on my 5th week now and waiting to see if my subject will hit a spurt of something… I read on a sarms website that 10-20mg a day of each is the norm so i stacked one of each daily with breakfast. if anyone has a better regiment please comment on this review. The company as a whole was good though, fast shipping, a definite good service. Thanks alot

  35. 5 out of 5

    Walter (verified owner)

    Great GH supplement for an excellent price.

  36. 5 out of 5

    Joshua (verified owner)


  37. 5 out of 5

    Sean Kelly (verified owner)

    Subject definitely noticed a decrease in elbow tendinitis and joint pain.

  38. 5 out of 5

    JonnyBravo (verified owner)

    Definitely legit product. I’ve thrown away so may sarms, this was the only thing I cared about. Thakns sarmtech!

  39. 5 out of 5

    Mike C. (verified owner)

    Great gains in 1 month of use! Size and strength up.

  40. 5 out of 5

    Brian W. (verified owner)

    Fast awesome shipping, Great gains, Great price. Stacked rad140 (15mg), mk677 (15mg), LGD4033 (10mg) and MK2866 (15mg) and very pleased with experiment results so far! Only 2 weeks in and subject is breaking major records. Will start S4 in week 5 @ (25mg twice daily) and up rad140 dose to (30mg). Will definitely do a PCT along with GW501516.

  41. 5 out of 5

    Anonymous (verified owner)


  42. 4 out of 5

    Steven (verified owner)

    Subject gained a lot of weight from using this product. About 7 lbs in 4 weeks. Also stronger. Stacked with S4. Enjoying results for the most part!

  43. 5 out of 5

    Peter (verified owner)

    Seems like the real deal, although was the first time I’ve researched with it. From what I’ve been reading, subjects really are not supposed to gain weight short term except water weight? I dunno, my subject gets DEEP sleep, body feels great, a sense of well being, tingling a tiny bit in hands. Subject started mk677 on last week of lgd cycle and it’s been 3 weeks with no loss of weight since. Little more vascular too. Good stuff!

  44. 5 out of 5

    Anonymous (verified owner)

    Excellent results!

  45. 5 out of 5

    Mjjc5291 (verified owner)

    Test subject showed increase in sleep quality, muscle mass, decrease in body fat, increase in appetite and over all well being. Highly recommend this product to research the effects of a g.h stimulator. Sarmtech.net with another quality product.

  46. 5 out of 5

    cranecreek (verified owner)

    Seriously legit! 16 days so far into my research trial. Subject administered 15 mg at 10 am, another 15 at 10 pm before bed. Muscles size up and super hard. Helped subject break numerous plateaus in lifts and overall strength. Skin looks better. More alert. Even vision is improved. Also subject sleeping better, but could be partially due to going heavier and harder during workouts. Only downside is subject’s appetite went way up. It makes some sense due to feeling better, lifting harder, expending more calories! Subject had to start drinking tons of water and have veges on hand to snack on every few hours to stay out of trouble. Compared a number of sites and the value on Sarmtech’s products really can’t be beat.

  47. 5 out of 5

    maverick (verified owner)

    Really impressed with the GH release, I’m positive this and rad was subject’s best sarm stack ever. Solid company.

  48. 5 out of 5

    Seth (verified owner)

    I researched the heck out of this stuff and was super glad to see this growth hormone and igf-1 stimulator in capsule form and very reasonably priced. It’s only been 3 days so I can’t report on experiment’s results but I can say the price is really good for a 90 day supply and the shipping was super fast too (to Indiana).

  49. 5 out of 5

    longstreets (verified owner)

    Having a superior research cycle with this GH. Good work keep it up sarmtec!

  50. 5 out of 5


    This product is an exceptional value – 4th time buying. High dosage, yet about half the price of competing products.

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MK-677 (Ibutamoren), 15 mg