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MK-677 (Ibutamoren) Review: Benefits, Dosage, Results and Where to Buy

MK-677 (Ibutamoren) Review: Benefits, Dosage, Results and Where to Buy


The pursuit of elevated physicality and peak performance remains an eternal quest, driving those dedicated to the athletic and muscular arts to relentlessly seek novel methodologies, both in the arenas of avant-garde training modalities and cutting-edge nutritional approaches.

Amidst the myriad of substances that have captured the fervent interest of this community, one particular compound has emerged as a veritable siren’s call – the enigmatic growth hormone (GH).

While exogenous administration of GH via injection remains an option, such a path is oft beset by prohibitive financial barriers and logistical complexities.

Therefore, the introduction of MK-677 (also referred to as Nutrobal or Ibutamoren in chemical terminology) has caused a stir in these spheres because it is expected to stimulate the body’s natural ability to release this highly sought-after anabolic substance.

However, what exactly is this MK-677, this material that has aroused such passion?

Within the parameters of this thorough investigation, we will explore the most profound nuances of this substance, revealing the complex web of its scientific foundations, its alleged health benefits, and the practical knowledge needed to maximize its potential while exercising prudent caution and maximum effectiveness.

Whether your ambitions lie in the consecrated pursuit of elite athleticism, the zealous embrace of a lifestyle of physical culture, or simply the noble quest for enhanced vitality, an understanding of MK-677 may prove an invaluable addition to your arsenal of knowledge.

Join us as we unveil the enigmas that shroud MK-677, and witness its capacity to enhance your odyssey towards the pinnacles of physical optimization.

What is MK 677?

MK 677  is often referred to as Ibutamoren or Nutrobal. It is a compound that mimics the effects of the hormone ghrelin to increase levels of insulin like growth factor (IGF 1) and human growth hormone (hGH) in the body. 

Activated GHSR causes the brain to release growth hormone. Clinical studies only discuss ibutamoren’s effects on hunger, which, like ghrelin, enhances it. It is located in brain areas that regulate appetite, pleasure, mood, biological cycles, memory, and cognition.

Is MK 677 a SARM?

No, it is not a SARM. In fact, it acts as a growth hormone secretagogue.

It truly works by stimulating HGH through its interaction with the ghrelin receptor. Thus, this important hormone is secreted more when it is stimulated by a ghrelin receptor agonist.

Without interfering with natural processes in the pituitary and hypothalamic regions, MK-677 increases their production. Several names for Mk677 exist, including Ibuta 677, Nutrobal, and Ibutamoren.

How Does MK 677 Work?

Image Source: Wikipedia

MK-677 has gained interest for its effects on the body’s hormonal environment. It focuses on influencing levels of growth hormone (GH) and insulin-like growth factor-1 (IGF-1).

This effect is believed to be achieved by mimicking a hormone called ghrelin which plays a dual role: stimulating appetite and triggering the release of the GH by the brain. Interestingly, MK-677 appears to interact with the same brain receptors (growth hormone secretagogue receptors or GHSRs) that ghrelin does.

By activating these GHSRs, MK-677 sends a signal to the pituitary gland, instructing it to release more HGH into the bloodstream. This rise in GH levels then appears to trigger a subsequent increase in IGF-1 production by the liver.

By copying ghrelin’s activity, MK-677 promotes increased levels of GH and IGF-1, both hormones with potential benefits for muscle growth, fat metabolism, and even sleep quality.  

MK-677 Reviews

It will take two weeks to see effects like changes in the body composition and up to 2 months to see visible improvements. 

MK-677 Before and After

MK677 Benefits

Rapid Muscle Recovery

For athletes and bodybuilders, the ability of MK-677 to promote rapid muscle recovery can translate into several tangible benefits:  [R]

  • Reduced muscle soreness and fatigue
  • Increased training frequency and intensity
  • Improved injury prevention
  • Enhanced muscle growth and development.

This compound promotes growth hormone and insulin-like growth factor 1 levels, which allows for a more comprehensive approach to recuperation following exercise. IGF-1’s anti-inflammatory characteristics and GH’s capacity to rebuild muscle work together to reduce pain and tiredness in the muscles, allowing for immediate recovery in between strenuous workouts.  [R]

As a result, athletes can train harder and more often, which could accelerate their muscular hypertrophy and strength. Additionally, quick recovery reduces the chance of overuse strains and injuries, which is advantageous for people who play high-impact sports or engage in demanding exercise regimens.  [R]


As we mature, our bodies experience a gradual decline in growth hormones, which can contribute to various age-related changes, such as decreased muscle mass, increased body fat, reduced bone density, and impaired cognitive function.  [R]

By mimicking the actions of ghrelin and binding to growth hormone secretagogue receptors, MK-677 triggers the pituitary gland to release more GH into the bloodstream, effectively counteracting this decline.

The elevated levels of GH and the subsequent increase in IGF-1 production can have wide-ranging anti-aging effects:

  • Muscle preservation and growth
  • Fat loss and metabolic regulation
  • Bone density maintenance
  • Cognitive function and neuroprotection
  • Skin health and appearance

In a research study done with 65 elderly males and females, daily consumption of Ibutamoren MK677 increased their GH and IGF 1 levels the same as those of healthy young adults. [R]

Fat Loss

A growing body of research suggests that MK-677 plays a role in influencing body composition. Studies have observed its effects in both healthy individuals and those with metabolic concerns. [R]

Research involving healthy young men receiving MK-677 treatment indicated a notable rise in levels of GH and IGF-1.  These hormonal changes, in turn, appeared to be linked to a decrease in overall body fat mass and a corresponding increase in lean body mass.[R]

Another study focused on obese individuals with reduced GH production.  After a year of using MK-677, participants showed a significant reduction in visceral adipose tissue (abdominal fat) and improvements in various metabolic markers, including insulin sensitivity and lipid profiles.[R]

So, if you want to improve your appearance or fight obesity, MK-677 can help you get there. [R]

You might be interested in our other articles.

Builds Muscle

MK-677 has garnered interest within fitness circles for its potential to influence muscle development.  This interest stems from its ability to stimulate the body’s natural production of growth hormone and insulin-like growth factor-1 which plays a key role in various processes related to muscle growth.  [R]

GH stimulates a process known as satellite cell proliferation and differentiation.  Satellite cells are precursor muscle cells that have an important role in muscle repair and growth.  Additionally, GH supports protein synthesis and nitrogen retention, both of which are crucial for building and maintaining muscle mass. [R]

IGF-1 functions as a powerful anabolic agent that promotes muscle hypertrophy (increased muscle fiber size) and protein synthesis.  It works synergistically with GH, amplifying its muscle-building effects.  Furthermore, research suggests IGF-1 reduces muscle protein breakdown, which could be particularly beneficial during intense training or periods of restricted calorie intake. [R]

One study, published in the Journal of Clinical Endocrinology and Metabolism, observed a notable increase in lean body mass and a decrease in fat mass in healthy young men who received MK-677 for two months.  Another study involving elderly adults found that MK-677 treatment for a year appeared to improve lean body mass, muscle strength, and functional capacity.  [R]

Improves Sleep

Studies suggest MK 677 influences sleep through its impact on growth hormones. GH levels naturally fluctuate throughout the day, with a surge occurring during deep sleep stages.  By increasing growth hormones, MK-677 promotes deeper and more restorative sleep. Additionally, some research suggests MK-677 affects sleep architecture while increasing the amount of time spent in REM sleep, another crucial stage for memory consolidation and overall well-being. [R]

Aside from scientific research, there have been several reports of subjective increases in sleep quality. [R]

Enhances Cognitive Function

MK-677 elevates levels of insulin-like growth factor 1 (IGF-1). Some studies suggest IGF-1 plays a role in nerve cell growth and protection, which is beneficial for brain health. [R]

Also, improved sleep quality, due to its influence on growth hormone, indirectly benefits brain health. Deep sleep is crucial for memory consolidation and overall cognitive function.  [R]

MK 677: Where to Buy?

1. BehemothLabz

BehemothLabz has rightfully earned its reputation as the gold standard for MK677 (Ibutamoren) in the fitness community. As a brand, they exemplify what high-quality MK677 should be – maximizing purity, potency, testing, and results. 

After personally testing their MK677, it’s clear why no other brand stacks up. BehemothLabz uses pharmaceutical-grade raw ingredients to produce the most powerful MK677 capsules on the market. The muscle-building and fat-burning effects are unrivaled. Within just a couple of weeks, I saw noticeable gains in size and strength. Recovery after workouts was faster too.

2. PureRawz

PureRawz has made a name for itself by offering premium quality SARMs and other compounds at prices that shatter the competition. That same insane value applies to their MK677 – hands down the most affordable option that still delivers beastly muscle growth and body composition changes.

After trying their MK677 liquid, I was blown away at how strong the effects were for the price. Within two weeks, the muscle-building and fat-loss results were on par with brands that cost 2-3x more. The liquid format also makes dosing super flexible and convenient.

3. claimed to be one of the leading SARMs and other research compound vendors. When it comes to their MK677, RCD offers pharmaceutical-grade products at very reasonable prices.

The convenience of their website and ordering process also makes a great option. They offer free shipping on orders over $100 and have fast processing times and domestic shipping for US customers. Their customer service team is very responsive if any issues come up.

4. Amino Asylum

Amino Asylum is an up-and-coming research chemicals supplier gaining more recognition for their commitment to quality. Their MK677 in particular stands out for delivering noticeable muscle gains and recovery at an affordable price point.

A major positive is that Amino Asylum is now doing third-party Janoshik testing on all their products, including MK677. This provides an extra layer of assurance on purity and concentration. They also offer a 10% first-order discount, enhancing the value.

5. Chemyo

Chemyo is also one of the established and trusted brands when it comes to SARMs and other research chemicals. Their MK677 showcases their commitment to quality and customer service.

The MK677 solution provides a robust 25mg per mL dose in a large 50 mL bottle. Chemyo has their products rigorously third-party tested for purity and concentration, ensuring accurate dosing. Their excellent customer service is also evidenced by reviews praising their handling of any issues.

How Should We Take It? 

Read further for you to have proper guidelines on how we should take MK 677 responsibly. 

MK 677 Dosage

It is advisable to have a daily dose of 25 milligrams for optimum muscle building and fat loss.

MK-677 Dosage for Beginners

For novices, it is recommended to take ten (10) mg of MK 677 dosage each day. 

MK 677 Cycle

There is no “best” MK677 cycle duration.

However, anecdotally and in limited human research, it was used regularly for up to 6 months with no obvious side effects at typical dosage ranges of around 30 mg.

To reap the long-term benefits, you should utilize it on a regular basis at lower dosages, but that is not how SARMs and bodybuilders will use it. As a result, a decent cycle length is around 10 weeks, however this varies depending on whether you use it alone or in combination with other SARMs.

However, on its own, a good cycle length for Ibuta 677 is about 10 weeks, with a four-week pause to assess how you feel on the downside before restarting.

MK-677 Stacks

Best MK677 for Sale


Company Features

  • Highest purity MK677 from certified raw materials
  • Unrivaled muscle-building and fat-burning effects
  • Rigorous third-party testing on every single batch
  • Verified 99.9% purity and precise dosing
  • Secure ordering and exceptional customer service
  • More muscle gains, strength, and recovery than any other brand

Shipping and Prices

BehemothLabz strives to ship all MK677 orders quickly and securely. Orders placed on weekdays before noon PST are typically processed and shipped same-day. Otherwise, the shipment goes out the next business day.

They do not ship on weekends or federal holidays, so please allow 1-2 business days for fulfillment. Large orders may require 1-3 additional days. Domestic shipping takes 1-3 days to reach the courier once sent.

Signature is required for orders over $200 or shipped by major carriers to ensure delivery. Contact BehemothLabz to arrange a preferred delivery time after shipment. They also allow pickup from local post offices.

Customers can request order holds if they need delivery at a later date, provided it has not shipped yet. Reach out to BehemothLabz customer service with any questions on shipping or delivery – they aim to provide a seamless experience.

With their streamlined processing times and shipment tracking, you can expect your MK677 order to ship out quickly and securely.

  • 15ml/17mg per ml/250mg $28.98
  • 30ml/33mg per ml/1000mg $96.48
  • 30ml/67mg per ml/2000mg $166.98

Money Back Guarantee

Customer satisfaction is a top priority for BehemothLabz. If you are unsatisfied with your MK677 order for any reason within 30 days of delivery, contact their customer service and they will work to find a resolution.

They accommodate returns and exchanges on orders within 30 days after delivery. However, opened or temperature-sensitive items cannot be returned due to degradation risks. Once returned items are verified, an exchange or refund will be issued to your original payment method where possible.

Refunds are generally processed back to the original payment method. If unavailable, alternatives like Zelle, e-check, or store credit can be arranged. Cryptocurrencies are refunded at current market values or the original payment amount, whichever is lesser.

Importantly, reach out to BehemothLabz customer service first regarding any payment disputes to resolve things faster before involving banks. Chargebacks without contacting them first may result in temporary blacklisting. Their support team aims to address any concerns quickly.

Payment Methods

  • Bitcoin
  • Maker
  • Ethereum
  • Dash
  • Paypal

Coupon Code

  • $10 off coupon for 100 points
  • $20 off coupon for 200 points
  • 12% discount for 350 points
  • 15% discount for 500 points

Third-party Testing


Company Features

  • The most affordable MK677 from a trusted brand
  • Liquid for flexible dosing convenience
  • Third-party lab testing for purity and concentration
  • Proven muscle-building and fat-burning effects
  • Insane value – quality rivaling far more expensive brands

Shipping and Prices

PureRawz ships all orders through reliable couriers like USPS, UPS, and Global Post. Once an order is processed, it typically reaches the shipping carrier within 5-12 business days.

They send a shipping confirmation email with tracking information when the package is scanned by the courier. However, this can occasionally take an extra business day. It’s important to note that once an order leaves its warehouse, PureRawz no longer has control over transit times.

For the latest updates on your order status while in transit, PureRawz recommends closely monitoring the USPS, UPS, or GlobalPost tracking sites linked in your shipping confirmation email. These provide real-time delivery updates.

At PureRawz, they aim to ensure a streamlined shipping experience through their network of trusted couriers. However, unforeseen postal delays are possible. Please allow 5-12 business days for fulfillment, and monitor your personalized tracking link for current delivery status updates.

  • 15ml/17mg per ml/250mg $30.48
  • 30ml/33mg per ml/1000mg $101.48
  • 30ml/67mg per ml/2000mg $172.48

Money Back Guarantee

Purerawz is committed to providing a satisfactory shopping experience and has a comprehensive return policy in place. Should any issues arise with an order, customers can request an exchange or refund at Purerawz’s discretion. Specifically, Purerawz will facilitate exchanges or refunds for incorrect items received. Refunds undergo a streamlined process initiated by Purerawz.

Importantly, chargebacks without contacting customer support first may result in serious consequences – including bans from Purerawz and being reported to other vendors. This strict policy aims to protect both customers and the business from potential scams. Ultimately, Purerawz prioritizes addressing all customer concerns thoroughly through its robust return and refund policies.

Payment Methods

  • Paypal
  • Venmo
  • Zelle
  • Cryptocurrency
  • Credit Cards

Coupon Code

  • $10 off coupon for 100 points
  • $20 off coupon for 200 points
  • 12% discount for 350 points
  • 15% discount for 500 points

Third-party Testing

Company Features

  • Potent muscle-building and fat-burning effects
  • Independent lab testing to verify purity and quality
  • Competitive pricing for premium MK677
  • Fast shipping and responsive customer service
  • Convenient ordering process and free shipping

Shipping and Prices offers free standard international shipping for orders over $150, making it easy to meet the minimum for free shipping when stocking up on products. For customers needing faster shipping, has several expedited options available at additional cost. Customers can choose 1-3 day USPS Priority Mail for $15.98 or pay just $4 more to add shipping insurance to Priority Mail. The fastest option is USPS Priority Express Overnight shipping which delivers within 1-2 days for $39. Priority Overnight with added insurance is $42.98.‘s tiered shipping options allow customers flexibility in choosing the shipping speed that fits their needs and budget. Free standard shipping provides an affordable option for larger orders and patience, while expedited shipping is available at incremental costs for customers wanting their items faster. The addition of shipping insurance also protects high-value orders against loss or damage. Overall,‘s thoughtful shipping policies provide customers with multiple secure choices for receiving their orders.

Money Back Guarantee prioritizes customer satisfaction and has a comprehensive return policy in place. Customers can request exchanges or refunds for incorrect items at‘s discretion. For refunds deemed necessary, will promptly initiate the refund process for the transaction amount or cost of returned items.

While does not typically accept returns, they will consider refunds if the customer provides a reasonable explanation aligned with their Terms and Conditions. Clear communication is key – aims to resolve issues quickly when contacted directly.

Customers can cancel orders before shipment by emailing [email protected] and will try to accommodate the request. However, once an order ships, returns incur a 15% restocking fee paid by the buyer along with return shipping costs.

Payment Methods

  • Cryptocurrency
  • Credit Cards
  • Crypto Processor

Coupon Code

  • $10 off coupon for 100 points
  • $20 off coupon for 200 points
  • 12% discount for 350 points
  • 15% discount for 500 points

Third-party Testing

Amino Asylum

Company Features

  • Noticeable gains in muscle, strength, and endurance
  • Janoshik third-party testing for purity
  • Competitive pricing and a 10% first-order discount
  • Good value for muscle growth on a budget
  • Active social media presence shows transparency

Shipping and Prices

While Amino Asylum does not publicly provide shipping policy details on its website, customer reviews indicate that orders are typically shipped quickly after being placed. However, processing times can take 4-5 days during busy periods when the company is likely facing high order volumes.

Customers have noted that Amino Asylum’s customer support team is helpful but can be slow to respond at times. The recommendation is for customers to email support with their order number to inquire about the status if an order that has not shipped within the typical timeframe.

Though official policy details are unclear, it appears Amino Asylum strives to ship orders promptly but can encounter occasional delays during rush times driven by seasonal demand spikes or promotions. Customers can likely get questions answered by reaching out to the support team directly.

  • 30ml/25mg per ml $54.99

Money Back Guarantee

Amino Asylum does not appear to have an official publicized money back guarantee or return policy. However, there are some insights available from customer reviews and reports. While quality and effectiveness of products is sometimes questioned, many note Amino Asylum’s customer service team is typically responsive to issues.

There are accounts of the company replacing damaged/defective products when contacted, though response time is often slow due to understaffing. Overall, customers indicate Amino Asylum is willing to work to address problems but the lack of a formal returns process can mean resolving issues takes longer.

Payment Methods

  • Zelle
  • Venmo
  • CashApp

Coupon Code

Unfortunately there is very little publicly available information about Amino Asylum’s coupon code policy. Their website does not appear to mention any details about coupon codes or discounts.

The only relevant information I could find is a Reddit post indicating there is a coupon code “CHEMHQ” that provides 20% off at However, there are no further details on whether this code is ongoing, single-use, expires, etc.

Overall, Amino Asylum does not seem to promote coupon codes or discounts on their official website. The one code shared on Reddit suggests they may offer special discounts periodically, but the terms are unclear. Customers likely have to rely on 3rd party review sites and communities to discover any unadvertised coupon codes that may exist. But there is no solid information available about Amino Asylum’s formal policy or terms for using coupon codes on their website. They do not seem to publicly provide or guarantee any codes.

Third-party Testing


Company Features

  • Robust 25mg/mL MK677 dose
  • Third-party testing verifies purity and accuracy
  • Proven muscle growth and body recomposition
  • Excellent customer service reputation
  • Larger 50mL bottle size for convenience

Shipping and Prices

Chemyo makes an effort to ship all orders quickly – within 24-48 hours when placed before the daily cutoff time. They cannot guarantee same-day shipping for orders received after the deadline.

In terms of delivery timelines, orders in the United States normally arrive between 2-5 business days, while foreign orders can take 7-21 business days depending on location. Once an order ships, Chemyo does not have control over potential delays impacting the exact arrival time.

Chemyo offers free shipping in the U.S. for orders over $100 and internationally for orders over $275. This provides an incentive for customers to spend enough to reach the minimum and enjoy the perks.

Customers can contact Chemyo’s 24/7 customer support via chat or email for any shipping-related questions or issues. 

  • 25mg per ml/50ml $79.99

Money Back Guarantee

Chemyo handles returns and refunds on an individual basis rather than a blanket policy. Customers who receive damaged items may request a refund or reshipment by submitting photos of the damage. For incorrect orders, Chemyo will promptly ship the right items once the error is verified.

Though Chemyo does not have a posted return time frame, they instruct customers to contact them immediately about any issues. This emphasis on quick communication allows problems to be resolved faster.

Refunds and exchanges specifically require contacting customer support by email or chat. Chemyo evaluates each unique case, so refund eligibility likely depends on providing a valid reason aligned with Chemyo’s fair use standards.

While Chemyo’s money-back policy lacks defined terms like return windows, its commitment to addressing issues suggests flexibility if customers reach out promptly and provide the necessary information. The case-by-case approach allows Chemyo to serve customers fairly based on unique circumstances.

Payment Methods

  • Checkbook
  • Altcoins
  • Bitcoin
  • Max Redemption
  • Credit Card

Coupon Code

Chemyo does not appear to have an extensive coupon code program or formal policy. The only way customers can access discount coupon codes for Chemyo is by signing up for their newsletter email list.

Chemyo likely periodically issues coupon codes and promotions to subscribers as an incentive to join the mailing list. However, details on code validity, expiration dates, or terms of use are not publicly provided.

The limited information suggests Chemyo’s coupon code policy is simplistic – codes are exclusively sent to newsletter subscribers and may vary in timing and duration. Customers can expect to receive periodic coupon codes by staying engaged with the email updates.

Third-party Testing

Can’t access their COA on the website. 

MK-677 Side Effects

Side Effects

MK 677 has not been documented to have many adverse effects that consumers should be concerned about, but select groups may have some.

Individuals who are insulin sensitive or have diabetes may be at risk when taking MK-677. The usage of MK 677 may aggravate symptoms associated with these illnesses. As with any other medication, proper dose and use of MK-677 is critical. In studies investigating how MK-677 promotes muscle mass, dose was critical. MK-677 side effects are mainly caused by one of two things: inappropriate dosage or prolonged use.

Frequently Asked Questions

Is MK 677 a steroid?

No, it’s a growth hormone secretagogue that mimics ghrelin receptors. 

Does MK 677 result in bloating? 

Ibutamoren induces water retention by increasing HGH levels. This can cause limb edema, which manifests as swollen hands and feet.

According to the study, bloating and water retention affect around 2% of people taking 25 mg of Ibutamoren each day. Higher doses are likely to cause more bloating.

Ibutamoren might also cause bloating due to increased food intake. This could be owing to the appetite-stimulating effects of MK-677.

The combination of elevated IGF-1 levels, water retention, and increased food intake may further increase the risk of a disease termed “bubble gut”, which is common among bodybuilders taking numerous PEDs.

Take Away

MK677, also known as ibutamoren or nutrobal, is a powerful growth hormone secretagogue that boosts gh levels and provides impressive benefits like increased muscle growth, fat loss, and improved sleep quality. It works by mimicking ghrelin to stimulate growth hormone release. For those looking to increase muscle mass, strength, and body composition, MK677 can produce significant results as part of an exercise and diet plan.

BehemothLabz MK677 capsules are regarded as the gold standard, maximizing purity, potency, third-party testing, and muscle-building effects. Despite the premium pricing, the unmatched quality and insane results justify the cost for serious athletes and bodybuilders.

PureRawz offers high-value MK677 liquid at prices that shatter the competition. Their third-party tested product rivals far more expensive brands in potency and results. The liquid format provides flexible dosing convenience at an affordable price point. has quickly earned a reputation for pharmaceutical-grade SARMs like their MK677. Backed by third-party testing and reasonable pricing, RCD’s MK677 delivers impressive muscle growth and body recomposition. Their ordering process and customer service also excel.

Amino Asylum provides an affordable MK677 focused on quality. Recent third-party testing helps assure purity and concentration. Early users report good muscle-building and recovery effects. Their transparency helps offset the limited brand history.

Chemyo, a trusted veteran brand, produces potent MK677 that enhances muscle gains, strength, and sleep quality. Rigorous third-party testing and excellent customer service give customers confidence in an accurately dosed, high-quality product. 


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