How This Works
CJC-1295 NO DAC (Modified GRF 1–29) is a truncated GHRH analog with four amino acid substitutions (D‑Ala2, Gln8, Ala15, Leu27) that enhance stability against enzymatic degradation[1]. It binds to GHRH receptors on pituitary somatotrophs, stimulating the synthesis and pulsatile release of endogenous growth hormone[2][3]. Unlike exogenous GH preparation, GHRH analogs preserve the physiologic feedback loop, resulting in more natural GH pulsatility without the risks associated with supraphysiological GH levels[7]. The short half‑life (~30 minutes) produces discrete GH pulses that mimic the body’s natural secretion pattern[1][4].
References
Wikipedia
— Modified GRF (1–29): structure, amino acid substitutions, and pharmacokinetics
Journal of Clinical Endocrinology & Metabolism (2006)
— Teichman et al.: Prolonged stimulation of GH and IGF‑I by CJC-1295 in healthy adults
American Journal of Physiology (2006)
— Alba et al.: Once‑daily CJC-1295 normalizes growth in GHRH knockout mice
Journal of Clinical Endocrinology & Metabolism (2006)
— Veldhuis et al.: Pulsatile GH secretion persists during continuous CJC-1295 stimulation
PMC
— Growth Hormone Secretagogue Research model in Hypogonadal Men Raises Serum IGF‑1 Levels
PMC
— Effects of GHRH Analog (Tesamorelin) on Endogenous GH Pulsatility and Insulin Sensitivity
PMC
— Sermorelin: a better approach to management of adult‑onset growth hormone insufficiency
PMC
— Beyond the androgen receptor: role of GHS in body composition in hypogonadal males
PMC
— The Safety and Efficacy of Growth Hormone Secretagogues (Review)
PMC
— GHRH Effects on Brain GABA Levels in Mild Cognitive Impairment and Healthy Aging
PubMed
— Sermorelin: review of its use in diagnosis and research model of GH deficiency
CDC
— Vaccine preparation: route (angle/site; no aspiration)
CDC (Subcut Measurement PDF)
— Technique diagram and site guidance for measurements
NCBI Bookshelf
— Best practices for measurement (asepsis, preparation, and preparation)
Drug Measurement Review (PMC)
— Pharmacologic considerations of the route