Side-by-Side Comparison · 2026

CJC-1295 No-DAC vs Somatropin

CJC-1295 No-DAC vs Somatropin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

CJC-1295 No-DAC
Growth Hormone & IGF

CJC-1295 No-DAC (also called Modified GRF 1-29 or Mod GRF) is a short-acting GHRH (Growth Hormone-Releasing Hormone) analog consisting of the first 29 amino acids of endogenous GHRH with four amino acid substitutions to improve stability and receptor binding....

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Somatropin
Growth Hormone & IGF

Somatropin is recombinant human growth hormone (rhGH) - a 191 amino acid protein identical to endogenous pituitary GH, produced via recombinant DNA technology. It is FDA-approved for multiple indications including pediatric and adult growth hormone deficiency, Turner syndrome, HI...

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Key Parameters
Parameter CJC-1295 No-DAC Somatropin
Category Growth Hormone & IGF Growth Hormone & IGF
Research Research Use FDA Approved
Half-Life 30 minutes ~3–4 hours (SubQ); ~20 min (IV)
Typical Dose 100–200 µg 0.1–0.3 mg/day (GHD); up to 2 mg/day (clinical indications)
Frequency 2–3x daily Daily or 6 days/week
Route Subcutaneous Subcutaneous / Intramuscular
FDA Status Not Approved Approved

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Frequently Asked Questions
What is the difference between CJC-1295 No-DAC and Somatropin?
CJC-1295 No-DAC: CJC-1295 No-DAC (also called Modified GRF 1-29 or Mod GRF) is a short-acting GHRH (Growth Hormone-Releasing Hormone) analog consisting of the first 29 amino acids of endogenous GHRH with four amino ac... Somatropin: Somatropin is recombinant human growth hormone (rhGH) - a 191 amino acid protein identical to endogenous pituitary GH, produced via recombinant DNA technology. It is FDA-approved for multiple indicati...
Which has a longer half-life, CJC-1295 No-DAC or Somatropin?
CJC-1295 No-DAC half-life: 30 minutes. Somatropin half-life: ~3–4 hours (SubQ); ~20 min (IV).
Can you stack CJC-1295 No-DAC and Somatropin?
CJC-1295 No-DAC and Somatropin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.