Mass Construction (MK-677 + RAD-140 + LGD-4033)

(10 customer reviews)


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Mass Construction (MK-677 + RAD-140 + LGD-4033) – Product Information

Mass Construction is a unique combination of three research compounds: MK-677, RAD-140, and LGD-4033. Each compound offers distinct properties that may complement one another when researched together.

MK-677 is a growth hormone secretagogue, potentially promoting increased appetite and lean muscle mass. RAD-140 is a selective androgen receptor modulator (SARM), known for its potential to enhance muscle growth and strength. LGD-4033 is another SARM with similar muscle-building properties.

When researched together, these compounds may synergistically support muscle development and strength. MK-677 could potentially enhance the anabolic effects of RAD-140 and LGD-4033, contributing to improved muscle growth and recovery during a research study. However, it is crucial to emphasize that this combination is intended solely for research purposes and should not be used for human consumption.

  • Mass Construction is a combination of three compounds: MK-677, RAD-140, and LGD-4033.
  • MK-677 is offered in 33mg per ml for 30ml, totaling 1000mg.
  • RAD-140 is offered in 33mg per ml for 30ml, totaling 1000mg.
  • LGD-4033 is offered in 67mg per ml for 30ml, totaling 2000mg.


MK-677 (Ibutamoren)

MK-677 is offered in 33mg per ml for 30ml, totaling 1000mg.

A recent study set out to investigate the effects of MK-677 as a Ghrelin mimetic on body composition and clinical outcomes in healthy older adults. It was found that MK-677 enhanced fluctuating growth hormone secretion and markedly increased fat-free mass over a 12-month period. More extensive research and randomized trials could potentially evaluate its efficacy in improving physical function and health outcomes in select populations.

CAS Number 159634-47-6
Molar Mass 528.67 g/mol
Chemical Formula C14H12F6N2O
IUPAC Name 2-amino-2-methyl-N-[1-(1-methylsulfonylspiro[2H indole-3,4′-piperidine]-1′-yl)-1-oxo-3-phenylmethoxypropan-2-yl]propenamide



RAD 140 is offered in 33mg per ml for 30ml, totaling 1000mg.

Testolone, also known as RAD 140, as a research compound is being investigated for its potential ability to enhance muscle hypertrophy. Current studies are examining the preclinical characterization of selective androgen receptor modulators and anabolic activity in male cynomolgus monkeys. To assess anabolic activity, one study examined gross body weight, which we know to be a sensitive marker of anabolic androgen action in young nonhuman primates. The results on animal body weight of 28-day dosing with RAD 140 were found to be statistically significant. This shows massive promise in the potential muscular gains brought on by Testolone.

CAS Number 1182367-47-0
Molar Mass 393.83 g/mol
Chemical Formula C20H16ClN5O2
IUPAC Name 2-chloro-4-{[(1R,2S)-1-[5-(4-cyanophenyl)-1,3,4-oxadiazol-2-yl]-2-hydroxypropyl]amino}-3-methylbenzonitrile



LGD 4033 is offered in 67mg per ml for 30ml, totaling 2000mg.

Ligandrol is a novel nonsteroidal oral selective androgen receptor modulator currently being investigated in research as a potential treatment for conditions relating to muscle dystrophy and osteoporosis.

Recent studies investigated the effects of LGD 4033 on muscle tissue in ovariectomized rats. A daily dose of LGD was administered and calculated according to the body weight of each individual rat at the onset of the study. Results and changes were noted as soon as week 2, the control group having weighed significantly less than rats undergoing LGD treatment. This difference remained until the end of the study, irrespective of LGD treatments. Additionally, the LGD treatments resulted in a higher number of capillaries in all muscles studied. Longer randomized trials and research could potentially evaluate its efficacy in improving physical function and health outcomes in select populations.

CAS Number 1165910-22-4
Molar Mass 338.253 g/mol
Chemical Formula C14H12F6N2O
IUPAC Name 4-[(2R)-2-[(1R)-2,2,2-trifluoro-1-hydroxyethyl]pyrrolidin-1-yl]-2-(trifluoromethyl)benzonitrile


This information is for educational purposes only and does not constitute medical advice. THE PRODUCTS DESCRIBED HEREIN ARE FOR LABORATORY AND RESEARCH USE ONLY. All clinical research must be conducted with oversight from the appropriate Institutional Review Board (IRB). All preclinical research must be conducted with oversight from the appropriate Institutional Animal Care and Use Committee (IACUC) following the guidelines of the Animal Welfare Act (AWA).
Our content is intended to be used and must be used for informational purposes only. It is very important to do your own analysis and research from Trusted Sources before making any purchase, based on your personal circumstances. You should independently research and verify any information that you find on our Website and wish to rely upon.
By completing and paying for your order, you agree to our Terms and Conditions. Customer satisfaction is our number one priority – if you are not 100% satisfied with the product you received, please contact us at [email protected]
ATTENTION: All our products are for LABORATORY AND RESEARCH PURPOSES ONLY, not for veterinary or human usage.


COA MK 677 lot 0071 2023 08 28 PR page 0001COA RAD 140 lot 0086 2023 08 18 PR1 page 0001COA LGD 4033 lot 0064 2023 08 21 PR1 1

COA MK 677 lot PRZMK624 2024 05 24 PR 1 1

COA MK 677 lot PRZMK624 2024 05 24 PR 1 2

10 reviews for Mass Construction (MK-677 + RAD-140 + LGD-4033)

  1. Michael Nieder (verified owner)

    Great stack

  2. Gary (verified owner)

    Fantastic product and service!

  3. Cole H. (verified owner)


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  7. Tyler123 (verified owner)

    Great stuff, so far everything seems perfect. Payment was easy, order was processed in a few days and shipping was very fast. My experience with support was very good, quick responses and very helpful. Very satisfied

  8. Tyler (verified owner)

    Great value, quick delivery and reliable service! I’ve had no issues so far with the product.

  9. Abdullah A. (verified owner)

    Great stuff.

  10. hubcitylr

    I wanted to leave an honest unbiased review of my 8-week cycle of these 3 products. I started at my heaviest body weight at 214lbs at 18% BF. I wasn’t looking to gain much fat so I kept my calories at around 3100-3200. I ran 15mg-17mg of Rad, 10-12mg Mk677, and 10-12mg LGD. Within the first two weeks, I was at 231lbs which had me a bit concerned but I stayed the course. I was sure that this was just water weight as I was consuming 1.25 gallons per day. Throughout the 8 weeks, my training was at the same intensity as before but I was hitting new PRs weekly. The rep counts were going up and the weight was moving easier. Around week 5 I started to experience joint pain in my forearms so I would recommend taking something for joints because you are going to grow quickly. FastForward to week 8, I was conscious of my weight throughout the whole process and managed to maintain my 230lbs but my BF dropped to 15.5%. My gains were visible and I was in my opinion pretty HUGE! About a week after the cycle I kept running a low dose of LGD as a PCT and I have lost about 8lbs of water and little fullness in the muscle. All things considered, this was my first time running a SARM. I will be doing it again, but I will take a Joint Supplement and I will probably just not worry about the scale so much and see what happens if I fuel my body like a bulk cycle should be.

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