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Healing & Recovery
Preclinical
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CJC-1295 (no DAC) / Mod GRF 1-29

CJC-1295 (no DAC) / Mod GRF 1-29

Also known as: Mod GRF 1-29, CJC-1295 without DAC, Modified GRF

Overview

Key Facts

Primary Goal: Research and therapeutic applications of CJC-1295 (no DAC) / Mod GRF 1-29

Activates GHRH receptors on pituitary somatotrophs to trigger acute GH release. Four amino acid substitutions (Ala2, Glu8, Ala15, Leu27) confer DPP-IV resistance.

Dosing Information

Half-Life

of approximately 30 minutes. It produces acute GH pulses that more closely mimic natural physiology.Half-Life~30 minutes

Typical Dose

100–300 mcg

Frequency

1-3 times daily

Cycle Length

8-16 weeks

Administration Routes:
subcutaneous

Benefits

  • Mimics natural pulsatile GH release pattern
  • Enhanced muscle recovery and growth
  • Improved sleep quality when dosed before bed
  • Synergistic effects when combined with GHRPs
  • Lower risk of desensitization compared to DAC variant

Side Effects

Facial flushing shortly after injectionmild
Headachemild
Dizziness or lightheadednessmild
Injection site rednessmild

Mechanism of Action

1

Activates GHRH receptors on pituitary somatotrophs to trigger acute GH release

2

Four amino acid substitutions (Ala2, Glu8, Ala15, Leu27) confer DPP-IV resistance

3

Works synergistically with ghrelin mimetics by acting on a separate receptor pathway

Contraindications

Do not use this peptide if any of the following apply:

  • Active malignancy or history of cancer
  • Pregnancy or breastfeeding
  • Uncontrolled diabetes

Storage & Reconstitution

Unreconstituted (Powder)

Temperature2–8°C (36–46°F) or -20°C (-4°F) for long-term
DurationUp to 3 months

Reconstituted (Mixed)

Temperature2–8°C (36–46°F)
Duration2-4 weeks

Research Summary

Preclinical

Mod GRF 1-29 has been shown to produce significant acute GH pulses comparable to native GHRH but with improved metabolic stability. When combined with GHRPs such as ipamorelin, studies show synergistic GH release that can exceed either compound alone by 2-3 fold. It is one of the most commonly used GHRH analogs in peptide research.

Frequently Asked Questions

Common questions about CJC-1295 (no DAC) / Mod GRF 1-29

UK-Specific Information

Exclusive data points and guidance for UK residents using CJC-1295 (no DAC) / Mod GRF 1-29

UK Lab Testing

UK Lab Testing

Recommended labs: Medichecks, Thriva (£89-£149 for peptide safety panel)

Why this matters: UK-specific lab testing guidance not available on US competitor sites

Commonly Stacked With

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