Enhanced Athlete MK-677 | Review, Benefits, and Dosage

Dr. Mike Jansen

Last Updated September 18, 2022

Dr. Mike Jansen

 September 18, 2022

Curious about Enhanced Athlete MK-677?

Do you want to know if Enhanced Athlete MK-677 is worth buying, and how it compares to other top brands?

Then you’ve come to the right place. In this comprehensive guide, we cover everything you need to know about Enhanced Athlete MK-677, including why it is one of the best legal growth hormone alternatives on the market today.

We also answer your most important questions, including:

  • What is MK-677?
  • What are the benefits of MK-677?
  • Is Enhanced Athlete the best MK-677 vendor?

…And much more!

Our team has put together a detailed review of MK-677, the history behind it, and more importantly, what makes Enhanced Athlete MK-677 stand out from the rest.

After reading this in-depth guide, you’ll have all the information you need to make an informed decision on Enhanced Athlete MK-677, including where to buy it.

Disclaimer: The contents of Testosterone.org are for informational and educational purposes. We do not provide legal advice. Likewise, we do not provide medical advice, diagnosis, or treatment. Please consult your physician prior to consuming any over-the-counter supplements, like a natural testosterone booster, and/or getting a prescription for a pharmaceutical medication. Your access to Testosterone.org is subject to our full disclaimer and terms of use.

What is MK-677?

When supplement is marketed as a ‘legal growth hormone’, it’s understandable that fitness enthusiasts and bodybuilders might find the concept enticing.

However, claiming that a supplement can yield the benefits of regular growth hormone without major side effects is also bound to arouse suspicion.

This is the current state of affairs when it comes to MK-677, also known as ibutamoren, nutrabol, and MK-0677. Originally patented in 1995, MK-677 was developed as a growth hormone secretagogue – a substance that, when consumed, causes the pituitary gland to secrete more growth hormone into the body.

As a result, the amount of Insulin Growth like Factor (IGF-1) in the body increases.

It’s important to note that this mechanism functions differently compared to taking exogenous human growth hormone, which is often injected directly into the bloodstream [1, 2].

MK-677’s main function was to counteract muscles and bones breaking down in elderly patients, as well as with bone frailty. It has also been found to help with patients recovering from cancer and other ailments [3].

You’re probably wondering…

What’s so special about MK-677? Why is MK-677 so popular now?

The recent surge in the popularity of MK-677 in the world of bodybuilding is mainly due to the fact that this substance can help improve athletic performance without producing a number of adverse side effects normally seen from SARMs, steroids, or human growth hormone.

In addition, it’s important to point out that MK-677 is not a SARM, although it is often included in the same category of supplements.

To briefly explain, SARMs, or selective androgen receptor modulators, were originally designed to replace steroids in the medical world, due to claims that they could produce steroid-like effects without the same dangerous side effects.


What is Enhanced Athlete?

One of the most controversial companies in the history of the sports supplement industry is Enhanced Athlete.

After having invested millions of dollars into technology and marketing, Enhanced Athlete achieved renown as being one of the most respected corporations in the supplement industry, with their motto as ‘pioneering human evolution’.

Due to a number of legal complications, the former owners sold the whole corporation (including Enhanced Athlete, Enhanced Labs, and Enhanced Chemicals) to a group of cryptocurrency investors.

Since then, the new owners have been heavily investing in technology, human capital, research, quality standards, and all kinds of infrastructure.

Another reason Enhanced Athlete gained so much notoriety in the bodybuilding world was because of their popular spokesperson, former Sacramento-based bankruptcy attorney Anthony Hughes, who is known online as “Dr. Tony Huge”.

His videos on YouTube documented his international travels, as well as his live demonstrations of injecting steroids and various other bodybuilding supplements.

In addition, “Dr. Tony Huge” has been largely outspoken about his libertarian views on how people should have the freedom to legally experiment with whatever chemistry they want, as well as how big pharma is actually the antithesis of good health.

Enhanced Athlete products are highly-researched, experimented on sufficient athletes and bodybuilders and proven legitimate, created from natural ingredients, and able to bring life-changing transformation and health benefits with very little to no side effects.

In terms of shipping, Enhanced Athlete offers shipping worldwide, as they claim to have a distribution center on every continent.

In fact, if you place an order over $50, you’ll be pleased to hear you can get free shipping. Larger bonuses are also offered, such as a whopping 40% off orders totaling over $2500.

Please note that orders placed on enhancedathlete.org can only be paid for with cryptocurrencies such as Bitcoin, Ethereum, Litecoin, and Bitcoin Cash.

Credit and debit cards are not accepted.

Benefits of MK-677

Although MK-677 was originally developed to prevent muscle and bone catabolism in elderly patients, as further research has been conducted, numerous benefits for athletes and bodybuilder have been uncovered.

Muscle Mass And Strength

One of the most noticeable benefits from taking MK-677 is improvements in both lean muscle mass and strength [4].

A number of studies have shown that MK-677 can increase IGF-1 levels by between 39-89%, which in turn causes muscles to grow in size. One research trial in particular found that healthy elderly subjects who consumed MK-677 achieved levels of IGF-1 and growth hormone secretion on par with levels seen in young adults.

Body Composition

MK-677 can also produce an increase in appetite. As a result, if more calories and macronutrients are consumed, muscle mass can then increase further [5].

An increase in basal metabolic rate is also a powerful benefit of consuming MK-677, as it leads to a faster reduction in body fat.

One study to demonstrate this increased fat loss involved 24 obese males treated with MK-677 25 milligrams or placebo daily for 8 weeks.

The results of this trial indicated changes in body composition and energy expenditure of an anabolic nature, with a sustained increase in fat-free mass [6].

Recovery From Exercise

Of course, we can’t forget about the benefits that initially made MK-677 an attractive option for elderly patients. This growth hormone secretagogue has been effectively used in several cases to help medical patients recover from injuries.

More specifically, MK-677 has been used to increase bone muscle density, such as in one randomized, double-blind study that looked at 123 elderly hip fracture patients receiving 25mg/day of MK-677 or placebo [5].

After 24 weeks had passed, a number of positive signs began to show in the group of participants dosing MK-677.

They were able to walk upstairs at a faster pace compared to the placebo, with their gait speed also increasing. In addition, they experienced less falls during the study compared to the placebo.

On top of that, IGF-1 levels in treated patients increased by 51.4 ng/mL compared to placebo.

In conclusion, it was found that a daily dose of MK-677 stimulates bone turnover in the elderly based on elevations in biochemical markers of bone resorption and formation [4].

Improved Sleep

Another powerful benefit from proper MK-677 usage is improved sleep, as evidenced in one double-blind, placebo-controlled study involving 8 subjects between the ages of 18-30. Doses were 5 and 25 milligrams of MK-677 and matching placebo.

The high-dose MK-677 treatment resulted in an approximately 50% increase in the duration of stage IV and in a more than 20% increase in REM sleep as compared to placebo. They also found that interruptions to normal sleep decreased from 42% under placebo to 8% under high-dose MK-677.

In essence, the participants in this study experienced deeper, more rejuvenating sleep, as well as deep states of sleep for longer periods without interruptions.

While improved sleep can boost mental cognition and general wellness, it can also greatly accelerate the process of building muscle [7].

Enhanced Athlete MK-677 Review

Don’t be mislead by the name ‘growth hormone’ given to Enhanced Athlete MK-677.

They are not selling actual growth hormone, but they are referring to the effects one can notice when taking a growth hormone secretagogue like Enhanced Athlete MK-677.

Enhanced Athlete MK-677 is dosed at 10 milligrams per capsule, with 60 capsules in each bottle. You may also be able to find Enhanced Athlete MK-677 at a slightly higher price, but dosed at 15 milligrams per capsule, with a bottle containing 72 capsules.

One advantage to buying from Enhanced Athlete, is that they have an ironclad 100% money back guarantee within 30 days after you receive your order.

If for any reason you aren’t satisfied with your order, you get a refund immediately, with no questions asked.

In addition, they provide a delivery guarantee, which means that if you don’t receive your order within the maximum delivery time indicated on the Enhanced Athlete website, they will issue you a full refund the day after your delivery time expires.

Plus, if your product does arrive later, you can keep it as well.

If you’re looking to reap the benefits of growth hormone without having to deal with adverse side effects, then we highly recommend picking up a bottle or two of Enhanced Athlete MK-677.

Click here if you want learn more about their brand and products.

Is MK-677 a Steroid?

The choice to start taking any sort of bodybuilding supplement often comes with many factors to take into account.

Does the supplement in question actually produce the benefits it promises to?

And secondly, what are the side effects associated with it?

In order to illustrate MK-677’s risk profile more clearly, we’ll first draw a comparison with using traditional human growth hormone. Even responsible use of human growth hormone can present the risk of adverse side effects, such as joint pain, dizziness, inflammation, and most commonly, carpal tunnel syndrome [2].

You might also be wondering – is MK-677 a steroid?

The short answer is no – MK-677 works in a completely different manner than anabolic steroids.

Essentially, since MK-677 doesn’t bind to androgen receptors, it doesn’t affect the hormonal balance of estrogen and testosterone, whereas anabolic steroid use will temporarily shut down natural testosterone production.

With that said, it’s also unnecessary to take post-cycle therapy supplements, otherwise abbreviated as PCT. Since MK-677 is not classified as an anabolic steroid, it is therefore completely legal to purchase, possess, or consume in several countries, such as the United States, Canada, the UK, and Australia.

Studies conducted on MK-677 have shown that side effects tend to be minor at the very worst.

In fact, we can reference one study conducted recently in 2020. Ibutamoren (MK-677) use was examined for 6 months in 161 elderly patients recovering from hip fracture.

No adverse effects were observed in any of the participants [4].

Is MK-677 Legal?

We’ve established that MK-677 is not a steroid.

However, due to the claims made about its powerful effects, some might be led to believe that a substance like MK-677 is a controlled substance.

Let’s get the facts straight: Even though MK-677 is often marketed as ‘legal growth hormone’, the same commercial restrictions are not applicable to MK-677 as they are with pure human growth hormone.

MK-677 is 100% legal and available to buy as an over-the-counter supplement.

It’s critical that this difference between MK-677 and other anabolics, such as steroids and SARMs, be taken into account.

While there are no restrictions on buying and using MK-677 in a number of countries, such as the United Kingdom and the United States, the rules are a bit different when it comes to professional sports.

The governing body responsible for deciding which substances can be allowed to be consumed in professional competitive sports, the World Anti-Doping Agency (WADA), has banned MK-677 and placed it under category S2 of prohibited substances.

This means that athletes competing at the highest levels of sport, such as the Olympics or the IFBB, are not permitted to have MK-677 in their system when competing [8].


MK-677 and Bodybuilding

In bodybuilding, human growth hormone has been used as a more extreme form of performance enhancement for decades. However, there are some major issues with this, such as limited access to pure and lab-tested growth hormone.

As such, some bodybuilders may choose to purchase HGH from a black market source.

Not only is it illegal in many countries to purchase HGH without a prescription, but the product purchased may not even be legitimate [9].

MK-677 has received a warm welcome to the bodybuilding community since it solves many of the problems associated with HGH.

While MK-677 certainly doesn’t produce the effects of HGH with the same level of potency, multiple studies have shown that it does indeed provide a number of benefits – namely, increased levels of GH and IGF-1 [10].

This growth hormone secretagogue is currently available in capsules and liquid form, which makes it easy to take with food or mixed into a beverage.

Despite limited exceptions, such as the oral steroid dianabol, using a syringe for taking these compounds is usually a point of consternation for athletes who want to take their physiques to the next level.

This is one of the reasons why athletes may opt for less invasive performance-enhancing substances, such as MK-677.

When cycling MK-677, it’s important to note that it has a bell curve dose response ratio. Essentially, this means that taking 12.5mg per day will generally increase HGH and IGF-1 levels by 150% while taking a higher dose of 25mg will increase HGH Levels 190%-200%. After that, an increased dosage will yield diminished returns [11].

Some anecdotal evidence suggests that MK-677 taken first thing in the morning will improve sleep quality, but may induce more lethargy during the day.

Keep in mind also that MK-677 has a half-life of 24 hours, so the dosage can be taken once per day. It can be made a part of both cutting as well as bulking cycles.

Enhanced Athlete MK-677 | Verdict

In conclusion…

Enhanced Athlete MK-677 is one of the most high-quality growth hormone secretagogues on the market. We like the Enhanced Athlete brand, as they are one of the most reputable and respected supplement companies on the planet with an ironclad money-back guarantee on all purchases.

Since most bodybuilders can’t afford or legally acquire a prescription for pharmaceutical grade human growth hormone, Enhanced Athlete MK-677 presents a viable alternative.

Generally, MK-677 is safe to use and produces virtually no adverse side effects.

While MK-677 isn’t technically illegal, it isn’t permitted for use in professional sports competitions like the Olympics, as per a ruling by WADA, the World Anti-Doping Agency.

More human studies need to be performed before we can say with 100% confidence that MK-677 is safe for humans to consume.

So what are you waiting for? Pick up a bottle of Enhanced Athlete MK-677 today and take your physique to the next level!


  1. M. G. Murphy, L. M. Plunkett, B. J. Gertz, W. He, J. Wittreich, W. M. Polvino, D. R. Clemmons, MK-677, an Orally Active Growth Hormone Secretagogue, Reverses Diet-Induced Catabolism, The Journal of Clinical Endocrinology & Metabolism, Volume 83, Issue 2, 1 February 1998, Pages 320–325, https://doi.org/10.1210/jcem.83.2.4551
  2. Cronkleton, E. (2019, March 29). HGH: Side effects in men and women. Healthline. Retrieved May 5, 2022, from https://www.healthline.com/health/hgh-side-effects#side-effects
  3. Ishida, J., Saitoh, M., Ebner, N., Springer, J., Anker, S. D., and von Haehling, S. (2020) Growth hormone secretagogues: history, mechanism of action, and clinical development. JCSM Rapid Communications, 3: 25– 37. https://doi.org/10.1002/rco2.9.
  4. Dr. Idiberto Jose Zotarelli Filho, M. S. (2020, May 23). Major approaches the use of GH secretagogue (MK-677) for muscle mass gain in elderly: A brief systematic review. Authorea. Retrieved May 3, 2022, from https://www.authorea.com/doi/full/10.22541/au.159050681.10910720
  5. Smith, R. G. (2005, May 1). Development of growth hormone secretagogues. OUP Academic. Retrieved May 3, 2022, from https://academic.oup.com/edrv/article/26/3/346/2355231?login=true
  6. Svensson, J., Lönn, L., Jansson, J.-O., Murphy, G., Wyss, D., Krupa, D., Cerchio, K., Polvino, W., Gertz, B., Boseaus, I., Sjöström, L., & Bengtsson, B.-A. (1998, February 1). Two-month treatment of obese subjects with the oral growth hormone (GH) secretagogue mk-677 increases GH secretion, fat-free mass, and Energy Expenditure1. OUP Academic. Retrieved May 3, 2022, from https://academic.oup.com/jcem/article/83/2/362/2865156?login=true
  7. Copinschi, G., Leproult, R., Onderbergen, A. V., Caufriez, A., Cole, K. Y., Schilling, L. M., Mendel, C. M., Lepeleire, I. D., Bolognese, J. A., & Cauter, E. V. (2008, April 9). Prolonged oral treatment with MK-677, a novel growth hormone secretagogue, improves sleep quality in man. Neuroendocrinology. Retrieved May 5, 2022, from https://www.karger.com/Article/Abstract/127249
  8. The prohibited list. World Anti-Doping Agency. (2022, February 9). Retrieved May 5, 2022, from https://www.wada-ama.org/en/prohibited-list?q=growth+hormone+secretagogue
  9. Human growth hormone (HGH) laws. HGH. (n.d.). Retrieved May 8, 2022, from https://hgh.us.com/human-growth-hormone-hgh-laws.php
  10. Ian M. Chapman, Ora H. Pescovitz, Gail Murphy, Theresa Treep, Kristine A. Cerchio, David Krupa, Barry Gertz, William J. Polvino, Emily H. Skiles, Suzan S. Pezzoli, Michael O. Thorner, Oral Administration of Growth Hormone (GH) Releasing Peptide-Mimetic MK-677 Stimulates the GH/Insulin-Like Growth Factor-I Axis in Selected GH-Deficient Adults, The Journal of Clinical Endocrinology & Metabolism, Volume 82, Issue 10, 1 October 1997, Pages 3455–3463, https://doi.org/10.1210/jcem.82.10.4297
  11. Nass R, Pezzoli SS, Oliveri MC, et al. Effects of an oral ghrelin mimetic on body composition and clinical outcomes in healthy older adults: a randomized trial. Ann Intern Med. 2008;149(9):601-611. doi:10.7326/0003-4819-149-9-200811040-00003
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