CJC-1295 with DAC is a GHRH analog carrying a Drug Affinity Complex that binds reversibly to albumin, stretching its half-life from minutes to roughly 6 to 8 days. That turns a short spike into a days-long elevation of GH and IGF-1, which is why researchers reach for it when the question is sustained GH-axis exposure rather than a single pulse. The honest trade-off: sustained levels sit further from natural pulsatility than the No-DAC version.
- The Drug Affinity Complex binds albumin reversibly, extending half-life from minutes to about 6 to 8 days.PubMed (CJC-1295)
- That long tail produces a sustained elevation of GH and IGF-1 instead of the sharp pulse seen with the No-DAC form.PubMed (CJC-1295)
- Span 2000 found females produce roughly 3x the GH of males yet land at similar IGF-1, so GH-axis response tracks differently by sex.Span 2000
- Weissberger 1991 showed oral estrogen blunts GH-stimulated IGF-1, while transdermal delivery reads more predictably.Weissberger 1991
- Somatropin (HGH) is approved for growth-hormone deficiency and tesamorelin (Egrifta) for HIV lipodystrophy; secretagogues like this one are off-label.The Complete Peptide Guide