MK-677 (Ibutamoren) (60 Capsules)


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Product Description

MK 677 Review 2021

MK-677, otherwise known as Ibutamoren and Oratrope, is an active selective agonist of the ghrelin receptor. According to research, MK 677 enhances the secretion of growth hormone (GH) and insulin-like growth factor 1. However, it does not affect cortisol levels in the body. Thus, it activates the GH axis to increase lean muscle moss.

MK-677 is currently being extensively researched as a potential treatment for growth hormone deficiency, appetite stimulation, muscle and bone wasting, and Alzheimer’s Disease (AD). Scientific research shows that MK 677 can also prevent the onset of AD as well as significantly improve sleep quality.

This peptide is highly valued for its long half-life. Clinical research suggests one single MK-677 dosage can keep IGF-1 levels elevated for up to 24 hours.

What is MK 677?

MK-677 belongs to a category of drugs that stimulates the pituitary gland to produce more human growth hormone. It is a GHS that mimics ghrelin – also known as, the hunger hormone. Ghrelin elevates when a person is hungry. As a result, it rouses ghrelin receptors in the brain known as growth hormone secretagogue receptors. These receptors can boost your appetite and encourage the pituitary gland to generate more HGH.

Animal studies indicate that GH levels increase approximately 30 minutes following oral administration of MK 677 and the effects last for several hours.

Ibutamoren peptide is indeed an interesting substance in the world of medical research. While it is not currently FDA approved, scientists are working hard to understand more about this peptide and how it can benefit the human body.

If you are a medical researcher, make sure you purchase MK 677 from a reputable source with credentials.

Is MK 677 a SARM?

MK-677 is commonly categorized as a selective androgen receptor modulator (SARM) because it doesn’t seem to fit into any other segment. You may have noticed certain suppliers selling the product as “MK 677 SARM.” This is incorrect. MK-677 is not a SARM and technically, it is not a peptide either.

Scientists describe it as a complex, synthetic chemical propanamide derivative that functions as a ghrelin receptor agonist. While it’s not technically a peptide, MK677 does fit nicely in the growth hormone secretagogue family of peptides.

The fact that MK isn’t a SARM is actually a plus point, as SARM supplements generally impact natural androgen production which can reduce testosterone levels. Administration of SARMs supplements is risky and must be carefully controlled to avoid suppression of androgen production. Fortunately, MK 677 usage is far easier and far safer.

MK 677 Benefits

Here are some of the MK 677 results individuals can expect with regular consumption of this compound.

MK 677 Muscle Growth

MK 677 or ibutamoren is an anabolic substance that can effectively increase lean body mass for muscle gain. Due to its ability to increase growth hormone levels, research shows MK 677 supplementation can elevate muscle mass, muscle strength, and reduce overall body fat.

Studies indicate that MK-677 supplements spur the growth of new muscle cells by signaling the pituitary gland to create more growth hormone and stimulating IGF 1 release in the liver. These two hormones join forced to increase protein synthesis and strength while simultaneously enhancing nitrogen retention and boosting recovery rate. According to science, it is possible to gain up to 8lbs of muscle in just six weeks of daily MK 677 oral consumption.

In a double-blind randomized controlled trial, 24 obese men received MK 677 therapy for two months. Results showed their basal metabolic rates and muscle mass increased.

Another study on eight food-deprived patients found that MK 677 effects reversed muscle wasting and muscle loss. Meanwhile, another study carried out on elderly patients suffering hip fractures experienced better gains and improved muscle strength with a MK 677 cycle.

MK 677 Somatopause

Somatopause is defined as the progressive decline in growth hormone secretion associated with increasing age.

Researchers say growth hormone secretion and muscle mass decline can begin at mid-puberty. This can lead to the loss of muscle function commonly seen in the elderly. With the gradual decline of GH and IGF-1, referred to as somatopause, come unpleasant effects such as loss of bone density, changes in body composition, and more.

Men at 70 years of age will produce approximately 60% if the GH he produced aged 18. Conversely, estrogen and progesterone elevate GH and IGF levels, which helps neutralize the effects of somatopause in women as they get older.

MK-677 hormone may provide a way of slowing down or possibly even stopping the progression of somatopause. In doing this, it can help improve muscle and bone strength in the elderly. What’s more, it may affect multiple body functions including brain health and cardiac function. Research is still premature, but it’s clear that both human and animal trials are showing great promise.

MK 677 Sleep

MK 677 ibutamoren peptide is more effective in improving sleep than any of the GHRPs. According to research, MK 67 elevates stage 4 sleep duration by 50% and boosts rapid eye movement (REM) sleep by 20%. The results are even more profound in older adults with REM sleep upping by 50% and REM latency lowering significantly.

REM sleep starts around 90 minutes after you fall asleep. This is when your brain activity enhances, your pulse and blood pressure speed up, and your eyes dart around swiftly. It’s also the time when you do your dreaming. REM sleep is essential for memory.

Sleep 4 is deemed the restful stage of sleep in which your body undergoes serious tissue repair and wound healing. This stage is crucial for preserving waking brain function. Prolonging this sleep stage can help boost muscle recovery, growth, brain function, and development.

REM is the least understood stage of sleep. While we know that babies spend half of their sleep time in REM and that it declines as we age, nobody knows just how crucial it is in the reinforcement of memories. Scientists believe prolonging REM sleep in animal models is key to gaining a deeper understanding of the functions of sleep, as a whole.

MK 677 Heart Health

As per scientific research, aging leads to the degradation of stem cell function. Because endothelial progenitor cells (EPCs) are stem cells essential in the regeneration of blood cells, any form of decline in EPCs may contribute to the development of atherosclerosis. This can lead to high blood pressure, heart attack, strokes, and a multitude of other issues.

Research in mice suggests that elevated GH levels can reverse the age-related demise in EPCs. As a result, it may also be useful in preventing heart-related illnesses.

Additional research shows the importance of GH in cardiac health in relation to nitric oxide levels. Nitric oxide is an important regulator of blood vessel health. It’s crucial in controlling blood pressure. Because nitric oxide levels decline with age, it means the elderly are more susceptible to cardiovascular issues.

MK 677 treatment is proven to increase NO synthase expression and ultimately nitric oxide levels in mice, meaning it could be an effective way to regulate blood pressure and ward off multiple cardiac diseases.

MK 677 Alzheimer’s Disease

According to scientific studies, IGf 1 is a key component in the clearance of amyloid beta in the nervous system. Amyloid beta plaques are a hallmark of Alzheimer’s Disease.

Trials performed on elderly patients indicate that MK 677 increases IGF 1 levels quite profoundly, but it doesn’t have any impact on the progression of AD once a patient is diagnosed.

At present, researchers are particularly interested in understanding whether MK 677 can prevent AD. Until now, little is known regarding its effectiveness as a preventative medicine. Such trials cost extensive amounts of money and time, so it may be a while until we understand the full scope of MK 677 effects on Alzheimer’s Disease.

There is one animal study that shows the ability of Mk 677 to prevent AD-like neurodegeneration, suggesting that it’s a fantastic preventative. In this study, mice were genetically predisposed to develop AD and treated with MK 677 beginning at three months of age. The results showed a reduction in amyloid beta deposition and decreases in neuron loss. This thereby indicates that MK-677 peptide can prevent the onset of AD, provided that the user begins treatment prior to substantial amyloid beta buildup. Still, human trials are required to fully prove this true.

MK 677 Bone Density

Researchers are also investigating MK 677 as a bone density treatment. According to research on young, obese males[i], MK-677 administration significantly improved bone function. There are also similar findings from studies performed on elderly subjects. These findings suggest that increased bone remodeling can lead to enhanced bone strength and resistance to fracture when combined with weight training.

In a study of elderly patients with hip fracture, research demonstrates that peptide MK-677 improved gait speed and lessened numbers of falls in the individuals. This further backs up the belief that this compound can elevate bone density and function. Nevertheless, scientists will need to carry out more research to certify this finding.

Studies also suggest that MK 677 can increase bone deposition. In one trial, patients underwent 9 weeks of MK 766, which resulted in an approximately 30% increase in serum osteocalcin and a 10% increase in bone alkaline phosphatase. This suggests MK 677’s effectiveness in increasing bone deposition.

The individuals in these studies noted an improved quality of living following hip fracture when consuming MK 677. Of course, more researched needs to be done in order to get it FDA approved and available to the general public. Once this can be done, many lives will improve as a result of MK 677 health benefits.

MK 677 Side Effects

MK 677 may have varying side effects when used. Overall, scientists consider it a relatively safe peptide with minimal adverse effects. However, some side effects of MK-677 may include an increased appetite, muscular pain, headache, sickness, and erectile dysfunction.

Ibutamoren can also trigger elevated levels of cortisol, prolactin, and leptin while thyroid hormones increase approximately one month after treatment. What’s more, MK677 may lead to lowered total testosterone without impacting free T levels.

A two-year MK-677 trial [ii]reported musculoskeletal pain, increased blood sugar, insulin resistance, and water retention. At present, this therapy has not been used in patients with cancer. Therefore, the risks are unknown.

MK 677 Review

MK-677 is a non-peptide growth and ghrelin hormone secretagogue agonist proven to increase Igf 1 and growth hormone levels in human and animal trials. MK 677 human clinical trials indicate that this compound is generally safe with minimal side effects. While it is not yet approved for human use, it is clear that this compound shows early promise.

Studies on both humans and animals suggest that Ibutamoren MK-677 supplementation may offer important benefits for muscle growth and strength, appetite, body composition, neurological function, cardiac health, and sleep. Research also shows that MK-677 can promote vascular health and aid in warding off diseases such as Alzheimer’s.

There’s also evidence to suggest this compound’s ability to improve sleep quality. This enhancement of sleep may explain why MK677 boasts a plethora of neurological benefits. Furthermore, research suggests the best MK-677 results come when it is taken for long periods of time as a preventative medication.

With more human research, we should be able to shed more light on Ibutamoren effects on the human body. This research may bring with it more information on its preventatives of chronic diseases.

Where to Buy MK 677

At present, only licensed medical researchers are able to buy MK-677 for the purpose of their medical studies. When it comes to purchasing this product, you should know that many vendors sell MK-677 for sale at very low prices for very low-quality products.

Prioritize the accuracy of your research by investing in premium, high-purity, USA MK-677 peptide online. You can expect the best product from Peptide Sciences – the leading online supplier of research peptides.

Buy MK-677 capsules, $125.00.

For an 8% MK-677 discount, purchase three products at once. We offer free shipping for orders over $200.


Author info: The information provided in this article was taken from studies carried out by recognized researchers including Svensson, J., C. Ohlsson, J.-O. Jansson, G. Murphy, D. Wyss, D. Krupa, K. Cerchio, Nass, Ralf, Suzan S. Pezzoli, Mary Clancy Oliveri, James T. Patrie, Frank E. Harrell, Jody L. Clasey, Steven B. Heymsfield, Mark A. Bach, Mary Lee Vance, and Michael O. Thorner.



[i] Svensson, J., C. Ohlsson, J.-O. Jansson, G. Murphy, D. Wyss, D. Krupa, K. Cerchio, et al. “Treatment with the Oral Growth Hormone Secretagogue MK-677 Increases Markers of Bone Formation and Bone Resorption in Obese Young Males.” Journal of Bone and Mineral Research 13, no. 7 (July 1, 1998): 1158–1166. doi:10.1359/jbmr.1998.13.7.1158.

[ii] Nass, Ralf, Suzan S. Pezzoli, Mary Clancy Oliveri, James T. Patrie, Frank E. Harrell, Jody L. Clasey, Steven B. Heymsfield, Mark A. Bach, Mary Lee Vance, and Michael O. Thorner. “Effects of an Oral Ghrelin Mimetic on Body Composition and Clinical Outcomes in Healthy Older Adults.” Annals of Internal Medicine 149, no. 9 (November 4, 2008): 601. doi:10.7326/0003-4819-149-9-200811040-00003.


Cite this article as: Research Peptides Scientists, “MK-677 (Ibutamoren) (60 Capsules),” in, September 4, 2021,


MK 677 Research Peptides Scientists

Product Usage: THIS PRODUCT IS INTENDED AS A RESEARCH CHEMICAL ONLY. This designation allows the use of research chemicals strictly for in vitro testing and laboratory experimentation only. All product information available on this website is for educational purposes only. This product has not been approved by the FDA for Human Use. Bodily introduction of any kind into humans or animals is strictly forbidden by law. This product should only be handled by licensed, qualified professionals. This product is not a drug, food, or cosmetic and may not be misbranded, misused or mislabeled as a drug, food or cosmetic.


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MK-677 (Ibutamoren) (60 Capsules)


12.5mg x 60 Capsules




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MK-677 (Ibutamoren) (60 Capsules)
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