Home›Research›Compare›Ghrelin vs IGF-1 LR3
Peptide ComparisonGhrelin vs IGF-1 LR3
Both are GH / IGF Axis peptides.
Ghrelin
acyl ghrelin
Half-life: ~24 min (initial), ~146 min (terminal)
3 providers listed
IGF-1 LR3
Insulin-like Growth Factor 1 Long R3
Half-life: 20–30 hours
70 providers listed
Ghrelin has published research citations on file; IGF-1 LR3 does not yet — the main evidence gap between them.
Ghrelin
Evidence
Half-life
~24 min (initial), ~146 min (terminal)
IGF-1 LR3
Evidence
Half-life
20–30 hours
| Your goal | Better option |
|---|---|
| Has published research citations | Ghrelin |
| Less frequent dosing (longer half-life) | IGF-1 LR3 |
| More provider options (3 vs 70) | IGF-1 LR3 |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
Ghrelin
IGF-1 LR3
Ghrelin
Associations of PYY, GLP-1 and LEAP2 with changes in feeding-related cognition, body weight and glucose homeo…
A Secondary, Subgroup Analysis of Alcohol Cue-Exposure Craving in Response to Pharmacological Inhibition of t…
Constant intravenous ghrelin infusion in healthy young men: clinical pharmacokinetics and metabolic effects
Metabolomic and proteomic analysis of ghrelin administration in mice infected with Echinococcus granulosus.
+5 more
IGF-1 LR3
No citations on file.
About Ghrelin
Must be acylated at Ser3 (by GOAT enzyme) for GHSR-1a binding. Receptor activation in the pituitary stimulates GH release; hypothalamic action via NPY/AgRP neurons increases appetite and reduces energy expenditure.
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.
Ghrelin
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
IGF-1 LR3
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
Ghrelin
Not enough vendor pricing yet.
IGF-1 LR3
Where to source these peptides
Ghrelin
3 listed
Browse directory →
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). Ghrelin vs IGF-1 LR3 — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/ghrelin/igf-1-lr3