Home›Research›Compare›GHRP-6 vs IGF-1 LR3
Peptide ComparisonGHRP-6 vs IGF-1 LR3
Both are GH / IGF Axis peptides.
GHRP-6
Growth Hormone Releasing Peptide-6
Half-life: 15-60 minutes
40 providers listed
IGF-1 LR3
Insulin-like Growth Factor 1 Long R3
Half-life: 20–30 hours
70 providers listed
GHRP-6 has published research citations on file; IGF-1 LR3 does not yet — the main evidence gap between them.
GHRP-6
Evidence
Half-life
15-60 minutes
IGF-1 LR3
Evidence
Half-life
20–30 hours
| Your goal | Better option |
|---|---|
| Has published research citations | GHRP-6 |
| Less frequent dosing (longer half-life) | IGF-1 LR3 |
| Lower typical price per mg | GHRP-6 |
| More provider options (40 vs 70) | IGF-1 LR3 |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
GHRP-6
IGF-1 LR3
About GHRP-6
Ghrelin receptor agonist; stimulates pituitary GH release and increases appetite via hypothalamic ghrelin pathways
About IGF-1 LR3
Long-acting analog of IGF-1 that binds to IGF-1 receptors, promoting muscle protein synthesis, cellular growth, and recovery. Suppresses myostatin activity and has a significantly extended half-life compared to native IGF-1 due to reduced binding protein affinity.
Information below reflects published research data only — not medical advice. Consult a qualified provider before use.
GHRP-6
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
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.
IGF-1 LR3
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
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.
GHRP-6
IGF-1 LR3
Where to source these peptides
GHRP-6
40 listed
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Providers offeringIGF-1 LR3
70 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 July 22, 2026
Free to reference and republish with attribution to PeptideBase. Choose a format:
PeptideBase. (2026). GHRP-6 vs IGF-1 LR3 — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/ghrp-6/igf-1-lr3