Home›Research›Compare›Ghrelin vs Mod GRF 1-29
Peptide ComparisonGhrelin vs Mod GRF 1-29
Both are GH / IGF Axis peptides.
Ghrelin
acyl ghrelin
Half-life: ~24 min (initial), ~146 min (terminal)
3 providers listed
Mod GRF 1-29
CJC-1295 no DAC
Half-life: ~30 minutes
15 providers listed
Ghrelin carries stronger published evidence (RCT, 9 key studies) than Mod GRF 1-29 (RCT, 2); both are research compounds.
Ghrelin
Evidence
Half-life
~24 min (initial), ~146 min (terminal)
Mod GRF 1-29
Evidence
Half-life
~30 minutes
| Your goal | Better option |
|---|---|
| Stronger clinical evidence | Ghrelin |
| Less frequent dosing (longer half-life) | Ghrelin |
| More provider options (3 vs 15) | Mod GRF 1-29 |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
Ghrelin
Mod GRF 1-29
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
Mod GRF 1-29
Endocrine and metabolic effects of long-term administration of [Nle27]growth hormone-releasing hormone-(1-29)…
Effects of [norleucine27]growth hormone-releasing hormone (GHRH) (1-29)-NH2 administration on the immune syst…
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 Mod GRF 1-29
Modified GHRH analog; binds GHRH receptors with improved stability to produce physiological GH pulses when combined with a GHRP
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.
Mod GRF 1-29
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
Mod GRF 1-29
Ipamorelin
Research suggests Ipamorelin and Mod GRF 1-29 may produce enhanced growth hormone pulse effects when combined. Ipamorelin acts via ghrelin receptors (GHSR) while Mod GRF 1-29 acts via GHRH receptors — distinct pathways that research suggests may amplify GH secretion when activated together.
Ghrelin
Not enough vendor pricing yet.
Mod GRF 1-29
Where to source these peptides
Ghrelin
3 listed
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Providers offeringMod GRF 1-29
15 listed
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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 Mod GRF 1-29 — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/ghrelin/mod-grf-1-29