Longevity & Vitality

CJC-1295

Also known as CJC-1295 DAC, Mod GRF 1-29, Modified GRF 1-29

A long-acting growth hormone releasing peptide

CJC-1295 is a synthetic growth hormone-releasing hormone analog studied for its ability to stimulate the body's own production of growth hormone in a steady, sustained way. It is often explored as part of a physician-guided approach to recovery, body composition, and healthy aging.

CJC-1295 visual

How It Works

CJC-1295 signals your pituitary gland to release more of your own growth hormone rather than introducing growth hormone directly. Its extended half-life means it may help support elevated GH and IGF-1 levels over a sustained window. Because it works through your body's existing GHRH signaling, it is often chosen for a smoother, more physiological approach to optimization.

The Science & Mechanism

CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH), modeled on its first 29 amino acids (the GRF 1-29 fragment). It binds to GHRH receptors on somatotroph cells in the anterior pituitary, stimulating the synthesis and release of endogenous growth hormone. The molecule carries amino acid substitutions that help it resist enzymatic degradation by dipeptidyl peptidase-4 (DPP-4), extending its half-life relative to native GHRH. The DAC (Drug Affinity Complex) version adds a maleimidopropionyl group that binds to circulating serum albumin, further prolonging its activity over days rather than minutes. By working through the body's own GHRH signaling rather than introducing growth hormone directly, it is studied for raising downstream insulin-like growth factor 1 (IGF-1) while preserving the pituitary's existing feedback regulation.

Potential Benefits

  • May support lean muscle development and improved body composition
  • May help promote deeper, more restorative sleep
  • May support tissue recovery and exercise readiness
  • May help support skin quality and connective tissue
  • Is being studied for its role in healthy aging and vitality
  • May support steady, physiological growth hormone release

Who It May Be Best Suited For

  • Adults exploring growth hormone optimization
  • Those focused on recovery and body composition
  • Individuals interested in healthy aging and vitality
  • People seeking support for sleep quality

Important Considerations

CJC-1295 is intended for educational consideration as part of a physician-guided protocol, and is not a substitute for medical care. Individual responses vary, and suitability depends on your health history, goals, and lab work. Dr. Rob reviews each person 1:1 to determine whether it fits your personalized plan.

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Educational information only. These pages are for educational purposes and are not medical advice. Care is offered only under the direct supervision of a licensed physician. Statements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease.
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