What is the difference between Ipamorelin and MGF?

Ipamorelin: Ipamorelin binds to the ghrelin receptor (GHSR-1a) and stimulates dose-dependent GH release with a clean hormonal profile. 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 Ipamorelin administered in research settings?

In research settings, Ipamorelin is typically administered via the subcutaneous route. 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›Ipamorelin vs MGF

Peptide Comparison

Ipamorelin vs MGF

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

Both are GH / IGF Axis peptides.

Ipamorelin

NNC 26-0161

PerformanceUnder clinical reviewResearch Only

Half-life: 2 hours

463 providers listed

Full Ipamorelin 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

Ipamorelin carries stronger published evidence (RCT, 5 key studies) than MGF (Review, 6); both are research compounds.

Quick Verdict

Ipamorelin

Half-life

2 hours

MGF

Half-life

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

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Ipamorelin
More provider options (463 vs 16)	Ipamorelin

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

Side-by-Side Comparison

Ipamorelin

MGF

Mechanism Family

GH / IGF Axis

Half-life

2 hours

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

FDA Status

Under clinical review

not evaluated

Admin Routes

subcutaneous

intramuscular

Availability

Research Only

Providers

463 listed

16 listed

FDA Update

Under clinical review

—

Avail. Notes

Selective GH secretagogue pentapeptide. Phase 2 by Helsinn (postoperative ileus) discontinued for lack of efficacy. No FDA approval. Not on FDA 503A bulks list. 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

Ipamorelin

RCT · 5 key studies · most recent 2026

MGF

Review · 6 key studies · most recent 2020

Research Citations

Ipamorelin

RCT2014 · International Journal of Colorectal Disease

Prospective, randomized, controlled, proof-of-concept study of the Ghrelin mimetic ipamorelin for the managem…

Animal2000 · J Endocrinol

GH secretagogues increase bone mineral content in adult female rats

Review2026 · Int J Mol Sci

Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications…

Review2026 · JBJS Rev

Injectable Peptides in Sports Medicine: A Structured Narrative Review of Evidence, Safety, and Antidoping Imp…

+1 more

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 Ipamorelin

Ipamorelin binds to the ghrelin receptor (GHSR-1a) and stimulates dose-dependent GH release with a clean hormonal profile. Unlike GHRP-6 or hexarelin, it does not significantly stimulate appetite-related pathways or cortisol secretion at standard research doses. This selectivity makes it a frequently studied peptide for protocols where hormonal side-effect profiles are a consideration.

Research Areas

selective GH release without cortisol or prolactin co-stimulationpulsatile GH secretion — synergistic with CJC-1295 in combination protocolslean mass support and fat metabolism via GH/IGF-1 axis modulationsubcutaneous injection 100–300 mcg; minimal receptor desensitization vs other GHRPs

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.

Ipamorelin

Absolute Contraindications

Under clinical review

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

Suggested Monitoring

IGF-1Fasting glucoseHbA1cInsulin

Research protocols routinely measure IGF-1 to track GH axis activity before and during use. Fasting glucose and insulin are monitored because GH elevation can reduce insulin sensitivity over time.

Regulatory Notes

global — WADA

This compound falls under WADA Prohibited List category S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics), prohibited at all times for competing athletes.

source

MGF

Absolute Contraindications

Under clinical review

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

Used Together?

Ipamorelin

CJC-1295
Research suggests Ipamorelin and CJC-1295 may produce enhanced growth hormone release effects when combined. CJC-1295 provides sustained GHRH receptor stimulation while Ipamorelin provides pulsatile ghrelin receptor stimulation — complementary pathways studied in GH secretion research.
Sermorelin
Research suggests Sermorelin and Ipamorelin may produce complementary growth hormone release effects when combined. Sermorelin acts as a GHRH analogue via pituitary receptors, while Ipamorelin acts via ghrelin receptors — dual-pathway stimulation studied in GH optimization research.
GLP-1 agonists
Research notes metabolic pathway overlap between growth hormone-releasing peptides and GLP-1 agonists. Both compound classes influence metabolic signaling; limited research has studied their combined effects. Consult your prescriber before combining.

Price (per mg)

Ipamorelin

$6.48/mg

$4.88 – $8.05 range

51 vendors

View price index →Find providers →

MGF

Not enough vendor pricing yet.

Find Providers

Where to source these peptides

Providers offering

Ipamorelin

463 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). Ipamorelin vs MGF — Per-mg Price Comparison. Retrieved September 11, 2026, from https://peptidebase.io/peptides/compare/ipamorelin/mgf

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