MGF Research Reference

Catalog classification, reference sizes, lab math links, and source-backed data. Educational use only — not medical advice.

Researched for: MGF evidence and protocol review

Growth Signal Research peptide Lyophilized Community-Supported (not scientifically verified)

Also known as: Mechano Growth Factor, IGF-1Ec

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Community-Supported: unlocked based on forum/Reddit discussion, NOT on peer-reviewed or scientific verification. This content is for research and educational reference only. These compounds, protocols, and dosing figures are not verified, may not be FDA-approved, and are not intended for use in humans or animals. Always independently verify before relying on any of this information.

Quick Facts

Reference Sizes

1 mg, 2 mg, 5 mg

Calculator

Preset available

Storage

Lyophilized: store at -20 deg C. After reconstitution: refrigerate 2-8 deg C; verify beyond-use timing against source COA. Native peptide has a very short half-life (minutes).

Solubility

Form, salt, and formulation dependent; verify the lot-specific COA

Catalog Description

Mechano Growth Factor (MGF, IGF-1Ec) is a splice variant of IGF-1 produced locally by skeletal muscle in response to mechanical loading or tissue damage, acting as an autocrine/paracrine signal that activates muscle satellite cells. Following resistance exercise or injury, MGF is an early local trigger that 'kick-starts' the satellite-cell activation phase of muscle repair and hypertrophy, preceding the differentiation/protein-synthesis phase driven by systemic IGF-1 signaling (see IGF-1 LR3 record).

Catalog descriptions reflect research context only. Not a medical claim or treatment recommendation.

Research Profile

Half-Life

Not established for a verified endogenous MGF peptide product; generic claims of a minutes-long half-life lack a directly identified endogenous analyte

Onset

Satellite cell activation reported within days in preclinical injury models

Administration Routes (Research)

Cell and animal research only; no validated human administration route

Reported Research Effects

Activates satellite cells (early muscle-repair phase)
Locally expressed in response to mechanical loading/damage
Precedes IGF-1-driven differentiation/protein-synthesis phase

Reported Research Side Effects

No human safety profile
Synthetic C-terminal peptide findings do not establish an endogenous circulating MGF product
IGF-axis and proliferative signaling concerns are theoretical until exact identity and exposure are demonstrated

Data source: Primary literature, regulator records, trial registries, and identity-specific evidence search

Reflects preclinical/research literature context only. Not a medical claim, dosing instruction, or treatment recommendation.

Research Protocols Reported in the Literature

No human administration protocol exists for a discrete endogenous MGF peptide, and no analogous peptide product of the IGF1 gene has been isolated from cells, tissues, or biological fluids [Identity question; Human protocol absent; Not established]Source: PMID 20130113
Synthetic 24-residue IGF-IEb C-terminal peptide has been used in cell and animal experiments, but exposures are model-specific and do not validate the existence or dosing of an endogenous MGF peptide [Cell or animal model; Study-specific; Study-specific]Source: PMID 20130113

Research Notes

The central evidence problem is identity, not merely dose. IGF-IEb/MGF mRNA is real, but the autonomous peptide commonly sold as MGF has not been identified as an endogenous product. Synthetic-peptide experiments therefore cannot be presented as dosing an established natural hormone.

Supplementary research context only. Not medical advice or a treatment recommendation.

Sources

MGF identity and IGF-I splice-product critical review — PubMed (NIH)
https://pubmed.ncbi.nlm.nih.gov/20130113/

Community Discussion Unverified

Best-effort summary of forum/Reddit discussion. This is anecdotal community commentary, not a scientific source, and does not count toward this record's verification status. Do not treat it as established fact or medical guidance.

Community discussion of MGF (mechano growth factor) largely centers on its PEGylated, longer-acting form (PEG-MGF); users report varied subjective effects on muscle recovery/growth, and combined IGF-1 LR3 + PEG-MGF protocols are commonly discussed in bodybuilding-research communities. Anecdotal, not clinically verified.

Experience with PEG-MGF (r/BodyHackGuide)
https://www.reddit.com/r/BodyHackGuide/comments/1ntcbc3/experience_with_pegmgf/

User shares a first-hand trial report of PEG-MGF, describing subjective muscle-recovery/growth effects; single self-reported account, not corroborated by clinical data.

IGF1-LR3 & PEG MGF PROTOCOL (r/moreplatesmoredates)
https://www.reddit.com/r/moreplatesmoredates/comments/vkclbz/igf1lr3_peg_mgf_protocol/

Community protocol/discussion thread combining IGF-1 LR3 with PEG-MGF for localized/systemic growth-factor research use; discussion-oriented, largely anecdotal.

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Research Use Only. All content is for educational and research reference only. Not medical advice, a treatment recommendation, or guidance on human use. Compounds are not FDA-approved drugs unless specifically noted.