Home›Research›Compare›CJC-1295 DAC vs Mod GRF 1-29
Peptide ComparisonCJC-1295 DAC vs Mod GRF 1-29
Both are GH / IGF Axis peptides.
CJC-1295 DAC
CJC-1295 with DAC
Half-life: 6–8 days
No providers listed yet
Mod GRF 1-29
CJC-1295 no DAC
Half-life: ~30 minutes
15 providers listed
CJC-1295 DAC has a longer half-life than Mod GRF 1-29, so it generally needs less frequent dosing.
CJC-1295 DAC
Evidence
Half-life
6–8 days
Mod GRF 1-29
Evidence
Half-life
~30 minutes
| Your goal | Better option |
|---|---|
| Stronger clinical evidence | Mod GRF 1-29 |
| Less frequent dosing (longer half-life) | CJC-1295 DAC |
| Lower typical price per mg | Mod GRF 1-29 |
| More provider options (0 vs 15) | Mod GRF 1-29 |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
CJC-1295 DAC
Mod GRF 1-29
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 CJC-1295 DAC
CJC-1295 DAC is a GHRH analog carrying a Drug Affinity Complex (DAC) modification that binds covalently to circulating albumin, greatly extending its plasma half-life relative to unmodified or short-acting GHRH analogs. Through this albumin binding it acts as a long-lasting agonist at pituitary GHRH receptors, associated in research with sustained growth hormone and downstream IGF-1 elevation. This contrasts with the non-DAC form (Mod GRF 1-29), whose action is measured in minutes rather than days.
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.
CJC-1295 DAC
Class-based (investigational)
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.
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.
sourceMod 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.
CJC-1295 DAC
Mod GRF 1-29
Where to source these peptides
CJC-1295 DAC
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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). CJC-1295 DAC vs Mod GRF 1-29 — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/cjc-1295-dac/mod-grf-1-29