What is the difference between GHRP-6 and MGF?

GHRP-6: Ghrelin receptor agonist; stimulates pituitary GH release and increases appetite via hypothalamic ghrelin pathways MGF: Splice variant of IGF-1; acts locally at site of muscle damage to activate satellite cells (muscle stem cells) for repair and hypertrophy

MGF is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

How is GHRP-6 administered in research settings?

In research settings, GHRP-6 is typically administered via the subcutaneous or intranasal routes. PeptideBase does not provide dosing or administration instructions.

How is MGF administered in research settings?

In research settings, MGF is typically administered via the intramuscular route. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›GHRP-6 vs MGF

Peptide Comparison

GHRP-6 vs MGF

Name: GHRP-6 vs MGF — Per-mg Price Comparison
Creator: PeptideBase
License: https://peptidebase.io/terms

Both are GH / IGF Axis peptides.

GHRP-6

Growth Hormone Releasing Peptide-6

PerformanceUnder clinical reviewResearch Only

Half-life: 15-60 minutes

39 providers listed

Full GHRP-6 profile →

MGF

Mechano Growth Factor

PerformanceNot EvaluatedResearch Only

Half-life: Minutes (rapidly degraded; PEG-MGF for extended action)

16 providers listed

Full MGF profile →

Bottom line

GHRP-6 is carried by more providers on PeptideBase (39 vs 16); otherwise the two are closely matched on the measures we track.

Quick Verdict

GHRP-6

Half-life

15-60 minutes

MGF

Half-life

Minutes (rapidly degraded; PEG-MGF for extended action)

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	MGF
More provider options (39 vs 16)	GHRP-6

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

GHRP-6

MGF

Mechanism Family

GH / IGF Axis

Half-life

15-60 minutes

Minutes (rapidly degraded; PEG-MGF for extended action)

FDA Status

Under clinical review

not evaluated

Admin Routes

subcutaneous, intranasal

intramuscular

Availability

Research Only

Providers

39 listed

16 listed

FDA Update

Under clinical review

—

Avail. Notes

Hexapeptide GH secretagogue. No FDA approval. Listed on the FDA Category 2 'significant safety risks' bulk-substances list (503B designation, added September 2023). WADA prohibited. Historical Phase 2 trials (Theratechnologies) but abandoned. Research chemical.

Non-PEGylated IGF-1 splice variant (Mechano Growth Factor). No FDA approval. WADA prohibited. Not on any FDA list. Research chemical only.

Research Evidence

GHRP-6

Review · 1 key study · dated evidence base — most recent 1997

MGF

Review · 6 key studies · most recent 2020

Research Citations

GHRP-6

Review1997 · European Journal of Endocrinology

Growth hormone-releasing peptides

MGF

Animal2020 · Exp Neurol

Mechano growth factor interacts with nucleolin to protect against cisplatin-induced neurotoxicity.

Animal2017 · Mol Brain

Mechano growth factor, a splice variant of IGF-1, promotes neurogenesis in the aging mouse brain.

Animal2014 · Int J Pharm

Microencapsulation of mechano growth factor E peptide for sustained delivery and bioactivity maintenance.

In vitro2011 · Mechanisms of Ageing and Development

Mechano Growth Factor E peptide (MGF-E), derived from an isoform of IGF-1, activates human muscle progenitor…

+2 more

About GHRP-6

Ghrelin receptor agonist; stimulates pituitary GH release and increases appetite via hypothalamic ghrelin pathways

Research Areas

GH release via GHS-R1a agonism — synergistic with GHRHpronounced appetite stimulation (ghrelin-mimetic effect)muscle recovery and GH pulse amplificationco-stimulation of cortisol and prolactin — less selective than ipamorelin

About MGF

Splice variant of IGF-1; acts locally at site of muscle damage to activate satellite cells (muscle stem cells) for repair and hypertrophy

Research Areas

muscle satellite cell activation following mechanical loadingautocrine/paracrine local muscle repair signal (distinct from systemic IGF-1)progenitor cell proliferation and fusion enhancement in vitroPEG-MGF variant extends half-life for research applications — no human clinical data for either form

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

GHRP-6

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Suggested Monitoring

IGF-1Fasting glucoseHbA1cCortisolInsulin

GHRP-6 produces stronger cortisol and prolactin stimulation than selective GH peptides. Research protocols measure IGF-1 for GH axis response and baseline cortisol. Glucose markers are standard given GH's effect on insulin sensitivity.

MGF

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Used Together?

GHRP-6

Corticosteroids
Research notes that GHRP-6 stimulates cortisol and ACTH release via the HPA axis. Combined use with corticosteroid medications may affect glucocorticoid regulation. Consult your prescriber before combining.

Price (per mg)

GHRP-6

$4.60/mg

$3.18 – $6.65 range

20 vendors

View price index →Find providers →

MGF

Not enough vendor pricing yet.

Find Providers

Where to source these peptides

Providers offering

GHRP-6

39 listed

Browse directory →

Providers offering

MGF

16 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More GH / IGF Axis Comparisons

Browse all peptides →

Educational research tools — not medical advice.

Cite this page

Data last updated August 26, 2026

Free to reference and republish with attribution to PeptideBase. Choose a format:

PeptideBase. (2026). GHRP-6 vs MGF — Per-mg Price Comparison. Retrieved September 11, 2026, from https://peptidebase.io/peptides/compare/ghrp-6/mgf

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