OnePin Peptide Library · Growth Hormone
CJC-1295 no DAC
Mod GRF 1-29 · Modified GRF (1-29) · ModGRF1-29
CJC-1295 without DAC (also known as Modified GRF 1-29 or Mod GRF) is a synthetic 29-amino acid peptide analog of growth hormone-releasing hormone (GHRH). It consists of the first 29 amino acids of endogenous GHRH with four amino acid substitutions (positions 2, 8, 15, 27) that protect against enzymatic degradation while preserving full biological activity at the GHRH receptor. Unlike CJC-1295 with DAC, this variant does NOT contain the Drug Affinity Complex (maleimide linker) that provides albumin binding, resulting in a shorter half-life of approximately 30 minutes versus 6-8 days. This shorter duration preserves natural pulsatile GH release patterns. It is the most commonly paired GHRH analog with Ipamorelin, sold as a pre-mixed blend by many compounding pharmacies.
Same fasting rules as Ipamorelin. Administer together with Ipamorelin at bedtime on empty stomach. 2+ hours fasted.
Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.
How it works
CJC-1295 no DAC binds to GHRH receptors on pituitary somatotrophs, activating cAMP/PKA signaling to release stored GH granules. The four amino acid substitutions (Ala2->D-Ala, Asn8->Gln, Ala15->Ala(modified), Met27->Leu) protect against DPP-IV degradation and methionine oxidation. Without the DAC maleimide linker, it does not bind albumin and is cleared rapidly (~30 min half-life), producing a single acute GH pulse that mimics natural pulsatile secretion. When paired with Ipamorelin (ghrelin receptor agonist), the dual GHRH + GHRP stimulation amplifies pulse amplitude and frequency, producing 3-5x greater GH release than either peptide alone.
CJC-1295 no DAC binds to GHRH receptors on pituitary somatotrophs, activating cAMP/PKA signaling to release stored GH granules. The four amino acid substitutions (Ala2->D-Ala, Asn8->Gln, Ala15->Ala(modified), Met27->Leu) protect against DPP-IV degradation and methionine oxidation. Without the DAC maleimide linker, it does not bind albumin and is cleared rapidly (~30 min half-life), producing a single acute GH pulse that mimics natural pulsatile secretion. When paired with Ipamorelin (ghrelin receptor agonist), the dual GHRH + GHRP stimulation amplifies pulse amplitude and frequency, producing 3-5x greater GH release than either peptide alone.
What to expect
Days 1-7: Improved sleep. Mild flushing post-injection. No visible body composition changes yet.
Weeks 2-6: Recovery improvements. Sleep consistently better. Body comp changes beginning.
Weeks 6-16: Significant body composition changes when paired with Ipamorelin, diet, and training.
Evidence
The honest take
Pulsatile vs continuous GH
Short half-life (~30 min) preserves natural GH pulsatility, which is considered superior to continuous GH elevation for body composition and health. This is its advantage over CJC-1295 with DAC.
CJC no DAC + Ipamorelin is the most widely used GH peptide combination in the community. Sold pre-mixed by numerous compounding pharmacies.
Interactions & stacking
What's safe to combine, and what belongs in a separate pin.
Safe & synergistic
Keep separate
Side effects & safety
Commonly reported
- Transient flushing post-injection
- Mild water retention first 1-2 weeks
- Occasional headache
Less common & notes
- Joint stiffness from GH/IGF-1 elevation.
- Monitor fasting glucose.
- Contraindicated in active malignancy.
Pharmacokinetics
Storage. Shorter stability than most peptides. Use within 14-21 days after reconstitution. DPP-IV degradation continues in solution despite amino acid substitutions. Refrigerate 2-8C. This shelf life becomes limiting factor for CJC/Ipa pre-mixed blends.
Regulatory status
Not FDA-approved. WADA prohibited under S2. Available through compounding and research channels.
Put it to work
Calculate, log & track
Open CJC-1295 no DAC straight into OnePin with your vial and dose pre-filled, then let it handle the syringe math and remind you before the vial runs out.
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The guide & community
The complete CJC-1295 no DAC walkthrough, real protocol discussion and coaching live inside the BlessUp community on Skool.
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