MK-677

Increases growth hormone levels to reverse muscle wasting, enhance bone density, and facilitate muscle growth.

Active ingredient:

n/a

Molecular formula:

C27H36N4O5S

Molecular weight:

528.6 g/mol

Intake:

Oral

MK-677

Active ingredient:

n/a

Molecular formula:

C27H36N4O5S

Molecular weight:

528.6 g/mol

Intake:

Oral

What is

MK-677

MK-677, also known as ibutamoren, functions by stimulating the secretion of growth hormone (GH) and elevating insulin-like growth factor 1 (IGF-1) levels. It achieves this by mimicking the action of ghrelin, a hormone, and binding to one of the ghrelin receptors (GHSR) located in the brain. When GHSR is activated, it prompts the release of growth hormone from the brain.

Notably, the clinical focus of studies on ibutamoren often centers on its impact on appetite. As anticipated, like ghrelin, ibutamoren tends to increase appetite. GHSR is present in regions of the brain associated with appetite regulation, pleasure, mood, circadian rhythms, memory, and cognition. Consequently, ibutamoren may influence these functions as well. It effectively raises growth hormone levels with minimal or no elevation of other hormones, particularly cortisol. Elevated cortisol levels can suppress the immune system, hinder wound healing, impair learning and memory, and are generally undesirable.

Benefits

  • Improves sleep quality
  • Enhances bone density
  • Exhibits nootropic effects
  • Facilitates muscle growth
  • Counters muscle wasting
  • Addresses aging and potentially extends longevity

Protocols

Provided as 25 mg/capsule, 30 capsules per bottle

  • Initiation: MK-677 therapy is initiated to stimulate growth hormone release, support muscle growth, enhance fat metabolism, and improve overall recovery.
  • Initial Dose: Begin with 25 mg (1 capsule) orally once daily on an empty stomach for the first two weeks to assess tolerance and minimize potential side effects.
  • Titration: If well tolerated, increase the dose to 50 mg (2 capsules) orally once daily on an empty stomach after the initial two-week period.
  • Maintenance: Maintain the dose at 25 mg (1 capsule) orally once daily on an empty stomach for ongoing support in growth hormone stimulation and overall recovery.
  • Duration: MK-677 is administered daily.
  • Weeks 1-2: 25 mg (1 capsule) of MK-677 once daily on an empty stomach
  • Week 3 and onwards: 25 mg – 50 mg (1-2 capsules) of MK-677 once daily on an empty stomach

*Provided as a standard protocol, dose may vary depending on the condition of the patient.
*The dosage of MK-677 may be adjusted based on the individual’s response, medical history, and specific treatment goals.

  • Known hypersensitivity to MK-677 or any component of the formulation.
  • Not recommended for use during pregnancy or breastfeeding unless specifically advised by a healthcare provider.
  • Patients with a history of cancer should consult with their healthcare provider before starting this treatment, as growth hormone can influence tumor growth.
  • Avoid taking other supplements or medications that might interact with MK-677 without professional advice.

  • Regular monitoring of growth hormone levels and overall health to assess the effectiveness of the treatment.
  • Periodic assessments to check for any adverse effects and to adjust the treatment as necessary.
  • Consultation with a healthcare professional before starting MK-677 to ensure it is appropriate for the patient’s health condition.
  • Patients should maintain a healthy lifestyle, including proper diet and exercise, to support the effectiveness of the treatment.

Procedure

  • Take 1 capsule (25 mg) of MK-677 orally once daily on an empty stomach.
  • It is recommended to take the capsule with water and preferably at the same time each day to maintain consistent blood levels of the supplement.
  • Do not exceed the recommended dosage unless advised by a healthcare provider.

  • Store the bottle of MK-677 capsules in a cool, dry place away from direct sunlight.
  • Ensure the bottle is tightly sealed to maintain the integrity of the capsules.
  • Keep out of reach of children.
  • Monitor for any unusual symptoms and report them to a healthcare provider immediately.

Clinical Research

Study:

MK-677 for Growth Hormone Release and Body Composition

Source:

The Journal of Clinical Endocrinology and Metabolism, PeptideWiki, Peptides.org

Results:

MK-677, also known as Ibutamoren, is an oral growth hormone secretagogue that has been extensively studied for its potential benefits in increasing growth hormone (GH) and insulin-like growth factor 1 (IGF-1) levels. These studies have shown that MK-677 can effectively improve body composition, enhance muscle growth, promote fat loss, and improve bone density.

MK-677 works by mimicking the action of ghrelin, binding to the ghrelin receptor (GHS-R) in the brain. This stimulates the secretion of GH from the pituitary gland, leading to increased levels of IGF-1. This mechanism helps in promoting anabolic processes such as muscle growth and fat metabolism without significantly affecting cortisol levels​.

Clinical trials have demonstrated that MK-677 can significantly increase lean body mass. In a study involving healthy elderly individuals, daily administration of MK-677 resulted in a significant increase in GH and IGF-1 levels, leading to improved muscle mass and strength.MK-677 has been shown to reduce body fat by increasing basal metabolic rate and enhancing lipolysis. In obese subjects, MK-677 treatment led to significant fat loss while preserving lean body mass​. Research indicates that MK-677 can improve bone mineral density by promoting bone turnover, making it beneficial for conditions like osteoporosis. Studies involving elderly participants showed increased markers of bone formation and resorption with MK-677 treatment​.MK-677 has been found to improve sleep quality by increasing the duration of deep sleep stages, which is crucial for recovery and overall health.

The Journal of Clinical Endocrinology and Metabolism, 1998; PeptideWiki, 2023; Peptides.org, 2023.

Read More: https://academic.oup.com/jcem/article/83/2/320/2865101, https://www.peptideswiki.org/, https://www.peptides.org/

Articles

Effects of an Oral Ghrelin Mimetic on Body Composition and Clinical Outcomes in Healthy Older Adults: A Randomized, Controlled Trial

Daily MK-677 significantly increased GH and IGF-I levels to those of healthy young adults without serious adverse effects. With placebo, mean (95% Cl) FFM decreased -0.5 (-1.1 to 0.2) kg, however, FFM increased 1.1 (0.7 to 1.5) kg with MK-677 (P<0.001, MK-677 vs. placebo); body cell mass as reflected by intracellular water decreased -1.0 (-2.1 […]

MK-677, an Orally Active Growth Hormone Secretagogue, Reverses Diet-Induced Catabolism

The reversal of diet-induced negative nitrogen balance by GH suggests a possible therapeutic role for GH treatment in catabolic patients. A double-blind, randomized, placebo-controlled, two-period, cross-over study was designed to investigate whether MK-677, an orally active nonpeptide mimic of GH-releasing peptide, can reverse diet-induced protein catabolism. Eight healthy volunteers (ages 24–39 yr) were calorically restricted […]

Doctor's Reviews

Sermorelin & Ibutamoren (MK-677) – HGH Secretagogues – Doc’s Analysis of Side Effects & Properties

A physician’s analysis of Sermorelin & Ibutamoren (MK-677) and their side effects – two HGH secretagogues used more and more in “anti-aging” clinics and by people who just want to look fit.

MK-677 (Ibutamoren): Benefits, Dosage, & Side Effects | EVOLVE BHRT Telemedicine

MK-677 (Ibutamoren) is an orally active growth hormone secretagogue that is frequently discussed for its lean muscle-building potential. Learn more about the benefits, typical dosage, and side effects of MK-677 with Justin Hokams, Senior Patient Care Coordinator.