MK-677, also known as Nutrobal or Ibutamoren, is a popular Growth Hormone Secretagogue (GHS). Here is everything you need to know about MK-677.

MK-677 Nutrobal/Ibutamoren functions as an agonist of the ghrelin/growth hormone secretagogue receptor. This means that it mimics the growth hormone (GH)-stimulating action of the endogenous hormone ghrelin.

MK-677 (Nutrobal/Ibutamoren) was created as a potential treatment for reduced levels of growth hormone and IGF-1, such as in children or elderly adults with a growth hormone deficiency and human studies have shown it to increase both muscle mass and bone mineral density, making it a promising potential therapy for the treatment of frailty in the elderly.

MK-677 and SARMS:

Despite its classification as a growth hormone secretagogue, MK-677 is often associated with selective androgen receptor modulators, or SARMs, due to the similar effects observed in animal, pre-clinical, and clinical studies.

However, it’s crucial to note that MK-677 is not a SARM. SARMs function by binding to androgen receptors, primarily in muscle and bone tissues, while Ibutamoren, as mentioned earlier, has the potential to mimic ghrelin’s actions in the brain.

In terms of its effects, Ibutamoren belongs to the family of growth hormone-releasing peptides, alongside compounds like Hexarelin, GHRP-2, and GHRP-6. MK-677 attaches to the ghrelin/growth hormone secretagogue receptor to stimulate the release of growth hormone.

One significant advantage of MK-677 not being a SARM is that SARMs can potentially affect natural androgen production, leading to lowered testosterone levels. As a result, researchers must exercise caution when administering SARMs to study subjects. In contrast, MK-677 does not require the same level of precaution.

Dosage and administration:

MK-677(Nutrobal) displayed a prolonged elimination half-life (24 hours).

The recommended dose is between 10mg and 20mg.

Benefits of MK-677:

1. Increases muscle building(lean mass)
2. Increases Fat Oxidation(fat loss)
3. Improves bone density
4. Increases sleep quality and REM sleep duration
5. Improves wound healing and tissue regeneration
6. Improves skin and hair
7. Combats aging

Possible side effects:

1. Water retention
2. Increase in sugar level in the blood
3. Appetite increase
4. Lethargy


If you’re interested in delving deeper into the scientific research on MK-677, you can find a study on the compound HERE.

This product can also be found in Healing Stack and Bulking Stack.

At EuroSARMs, we offer MK-677 in convenient 60-capsule bottles, with each capsule containing 10mg of this remarkable GHS. If MK-677 doesn’t align with your specific requirements, we also have a wide range of other high-quality products available for exploration here.

8 reviews for MK-677 Ibutamoren

  1. Ivan


    (2) (0)
  2. miguelp

    ajuda-me a comer em fase de bulking

    (3) (0)
  3. Luís Durão

    (0) (0)
  4. Anonymous

    (1) (0)
  5. Nicolas Dick Catalani

    Very satisfied on both quality/effect product as the customer service all-round.

    (0) (0)
  6. Fernando O.

    Currently on week 6 staked with Ostarine and very happy with the results. No side effects and only positives. And not to mention the customer service which has been A+++

    (0) (0)
  7. Fernando O.

    Currently on week 6 staked with Ostarine and very happy with the results. No side effects and only positives. And not to mention the customer service which has been A+++

    (0) (0)
  8. Ediz

    (0) (0)

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