Home›Research›Compare›GHRP-2 vs Mod GRF 1-29
Peptide ComparisonGHRP-2 vs Mod GRF 1-29
Both are GH / IGF Axis peptides.
GHRP-2
Growth Hormone Releasing Peptide 2
Half-life: 15–60 minutes
42 providers listed
Mod GRF 1-29
CJC-1295 no DAC
Half-life: ~30 minutes
15 providers listed
Mod GRF 1-29 carries stronger published evidence (RCT, 2 key studies) than GHRP-2 (Cohort study, 2); both are research compounds.
GHRP-2
Evidence
Half-life
15–60 minutes
Mod GRF 1-29
Evidence
Half-life
~30 minutes
| Your goal | Better option |
|---|---|
| Stronger clinical evidence | Mod GRF 1-29 |
| Lower typical price per mg | GHRP-2 |
| More provider options (42 vs 15) | GHRP-2 |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
GHRP-2
Mod GRF 1-29
GHRP-2
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 GHRP-2
Synthetic hexapeptide that stimulates pulsatile growth hormone release from the anterior pituitary by acting on the ghrelin receptor (GHSR-1a). Commonly stacked with GHRH analogs such as CJC-1295 or Sermorelin to amplify GH output synergistically.
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.
GHRP-2
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
GHRP-2 stimulates GH and cortisol release. Research protocols measure IGF-1 for GH axis response and baseline cortisol given the compound's adrenal stimulation. Glucose markers are standard given GH's effect on insulin sensitivity.
Mod GRF 1-29
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
GHRP-2
Corticosteroids
Research notes that GHRP-2 stimulates cortisol and ACTH release via the HPA axis. Combined use with corticosteroid medications may affect glucocorticoid regulation. Consult your prescriber before combining.
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.
GHRP-2
Mod GRF 1-29
Where to source these peptides
GHRP-2
42 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
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Cite this page
Data last updated July 22, 2026
Free to reference and republish with attribution to PeptideBase. Choose a format:
PeptideBase. (2026). GHRP-2 vs Mod GRF 1-29 — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/ghrp-2/mod-grf-1-29