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Mod GRF 1-29 vs CJC-1295

A neutral, side-by-side look at Mod GRF 1-29 and CJC-1295: what each one is, its class, half-life, storage, and the public sources behind it. Educational reference only, not medical advice, dosing, or a recommendation to use either compound.

AttributeMod GRF 1-29CJC-1295
CategoryGrowth HormoneGrowth Hormone
Half-lifeShort, in the range of tens of minutes, and far shorter than the DAC versionWith DAC ~6-8 days; without DAC
Common vialVaries2, 5, 10 mg
ReferenceVerifiedVerified

What is Mod GRF 1-29?

The 1-29 fragment of growth hormone releasing hormone carrying four amino acid substitutions for stability, without the drug affinity complex that extends the related CJC-1295. It is the shorter-acting member of that pair, which is the reason the two are catalogued separately. Not approved for human use.

Sources

  • Endocrinology 1985: structural requirements for activation of pituitary adenylate cyclase by GRF analogs
Read the Mod GRF 1-29 profile →

What is CJC-1295?

A synthetic growth-hormone-releasing hormone (GHRH) analog that binds pituitary GHRH receptors to stimulate growth hormone secretion. The DAC (drug affinity complex) version binds albumin for a much longer half-life than the unmodified peptide.

Sources

  • Teichman et al., J Clin Endocrinol Metab 2006
Read the CJC-1295 profile →

Educational reference only, compiled from public sources. Not medical advice, diagnosis, treatment, or a dosing recommendation, and not a recommendation to use any compound. Many compounds listed are research materials not approved for human use. Consult a qualified professional.