CJC-1295 DAC 5mg

Twice-weekly subcutaneous protocol for long-acting GHRH analog research.

CJC-1295 DAC 5mg

CJC-1295 DAC is a long-acting synthetic analog of growth hormone-releasing hormone (GHRH). The DAC (Drug Affinity Complex) modification binds reversibly to albumin, extending the peptide's half-life to approximately 6 to 8 days

Vial Size
Dose Range
Schedule
Primary Goal
5mg vial 300 to 1,000 mcg per injection with gradual titration. Twice-weekly subcutaneous injections for 8 to 12 weeks (extend to 16 weeks if desired). Support sustained GH and IGF-1 elevation for research into GH-axis effects.

Reconstitution Summary

0.5 mL per 5 mg vial (10 mg/mL).

Storage Summary

Lyophilized frozen; reconstituted refrigerated; avoid repeated freeze-thaw.

Reconstitution Steps

  1. Draw 0.5 mL bacteriostatic water with a sterile syringe.
  2. Inject slowly down the vial wall; avoid foaming.
  3. Gently swirl until dissolved (do not shake).
  4. Label and refrigerate at 2 to 8 °C, protected from light. At 10 mg/mL, 1 unit = 0.01 mL = 25 mcg on a U-100 insulin syringe.

How It Works

CJC-1295 DAC mimics endogenous GHRH, binding to GHRH receptors on pituitary somatotrophs to drive GH release. The DAC modification (albumin-binding moiety) keeps the GHRH analog circulating for days rather than minutes, extending the half-life to approximately 6 to 8 days. The resulting GH surge stimulates IGF-1 production (primarily in the liver); IGF-1 then mediates many growth and metabolic effects through JAK/STAT signaling pathways. Notably, pulsatile GH secretion persists even during continuous CJC-1295 stimulation, preserving physiological release patterns.

Benefits & Side Effects

  • Supports sustained elevation of GH and IGF-1 in a dose-dependent manner.
  • May promote increased lean body mass, reduced fat mass, and improved body composition consistent
    with GH/IGF-1 axis activation.
  • Enhanced protein synthesis and recovery potential through anabolic signaling.
    Generally well tolerated in clinical studies; occasional mild injection-site reactions (redness, swelling)
    may occur.
  • Some individuals report transient flushing, headache, or water retention during initial ti

References & Scientific Literature

  1. Teichman SL et al. Prolonged stimulation of GH and IGF-1 by CJC-1295 in healthy adults (J Clin Endocrinol Metab, 2006).
  2. Ionescu M et al. Pulsatile GH secretion persists during continuous CJC-1295 stimulation (J Clin Endocrinol Metab, 2006).
  3. Alba M et al. Once-daily CJC-1295 normalizes growth in GHRH knockout mouse (Am J Physiol Endocrinol Metab, 2006).
  4. Brinkman JE et al. Physiology, Growth Hormone (StatPearls, NCBI Bookshelf).