Compound Deep-Dive

Tier 4: PeptideA powerful growth hormone secretagogue that works for muscle and sleep but requires strict glucose monitoring.

MK-677 (Ibutamoren)

IbutamorenNutrobalLUM-201L-163,191

High reward, high metabolic risk

Hype Risk

7/10

Noticeability

9/10

Evidence Tier

Research only

Cost / Month

~$45

Not a SARM

What it's actually good for

Muscle

Research Supported

Consistently increases lean body mass in clinical trials, though much of the initial weight is water.

Sleep

Research Supported

Clinical data shows a significant increase in REM sleep duration and quality.

Recovery

Mixed Evidence

Anecdotal reports of improved injury healing are common, but clinical evidence for athletic recovery is limited.

Energy: neutralFocus: neutralLongevity: neutralMood: neutralImmunity: neutral

How it works

MK-677 is a potent, non-peptide ghrelin receptor agonist that increases growth hormone and IGF-1 levels. Clinical trials demonstrate its ability to increase lean body mass and bone density, though it is not FDA-approved and carries significant metabolic risks.

It mimics the action of the hormone ghrelin by binding to the growth hormone secretagogue receptor (GHSR), stimulating pulsatile growth hormone release from the pituitary.

Safety

May significantly impair insulin sensitivity and increase fasting blood glucose.
Commonly causes significant water retention (edema) and joint pain.
Can cause extreme, uncontrollable hunger due to ghrelin mimetic activity.
Potential risk of congestive heart failure in predisposed individuals.

The full StackRoast report adds

The exact dose, timing, and effective range to actually run it at
Where people go wrong with it — the dose-creep and timing traps
What MK-677 (Ibutamoren) clashes with or duplicates in your stack

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Community Reality Check

Distilled from 8500 threads

Confidence: high

What users report

Improved sleep quality
Increased muscle fullness
Enhanced recovery speed

The catch

Extreme hunger
Anxiety and fear response
Bloated appearance

Side effects reported

Edema
Insulin resistance
Lethargy
Numbness in extremities

https://www.reddit.com/r/peptideshttps://www.reddit.com/r/sarmshttps://www.reddit.com/r/moreplatesmoredateshttps://www.reddit.com/r/Peptideshttps://www.reddit.com/r/researchchemicals

The Receipts

10 sources— studies, videos & links

Videos

MK-677 (Ibutamoren) - A Comprehensive Overview

More Plates More Dates

An exhaustive deep dive into the clinical data and practical application of MK-677.

This Pill Grows POUNDS of Muscle (But Is There A Catch?)

Renaissance Periodization

Dr. Mike Israetel discusses the muscle-building potential and the significant hunger side effects.

Papers

Nass et al. (2008)rct2008

A 2-year study showing MK-677 increased GH and IGF-1 levels and fat-free mass in healthy older adults.

Murphy et al. (1998)rct1998

Found that MK-677 increased fat-free mass and basal metabolic rate in obese subjects over 8 weeks.

Creators

Derek

YouTube

Widely considered the primary community authority on the pharmacology of GH secretagogues and SARMs.

Mike Israetel

YouTube

PhD in Sport Physiology who provides evidence-based analysis of performance-enhancing compounds.

Clinical Sources

Examine: Ibutamorenclinical PubMed: MK-677 in Older Adultsclinical PubMed: MK-677 and Body Compositionclinical Hip Fracture Recovery Trial (Adunsky et al., 2011)clinical

Taking MK-677 (Ibutamoren) in a stack? Find out if the combination actually makes sense.

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