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CJC with DAC 5mg
CJC with DAC 5mg is a long-acting peptide designed to support sustained growth hormone release over extended periods. It is a Growth Hormone Releasing Hormone (GHRH) analog peptide studied widely for its ability to stimulate the natural production of growth hormone (GH) and insulin-like growth factor-1 (IGF-1). The addition of DAC (Drug Affinity Complex) allows the peptide to bind to albumin in the bloodstream, significantly extending its half-life and allowing for sustained activity over several days.
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Product Information
CJC with DAC 5mg is a modified version of CJC-1295, engineered with a Drug Affinity Complex (DAC) that extends its half-life to around 6 to 8 days and allows for prolonged stimulation of growth hormone release. This extended activity reduces the need for frequent administration, making it a practical choice for individuals seeking consistency and convenience in peptide protocols.
By supporting the natural pulsatile release of growth hormone, it is often explored in wellness and performance-focused routines aimed at recovery, body composition, and overall vitality. Its long-acting nature makes it particularly suitable for structured, low-frequency dosing strategies.
Supplied as a 5mg lyophilized powder, it ensures stability and precision during storage and reconstitution. At Peptides Costa Rica, each vial is manufactured under strict quality standards to maintain purity and reliability for advanced applications.
| CJC with DAC 5mg — Technical Specifications | |
| Specification | Value |
| Product Name: | CJC with DAC 5mg |
| Compound Type: | Synthetic GHRH analogue, Drug Affinity Complex modified |
| CAS Number: | 446262-90-4 |
| PubChem CID: | 56841945 |
| Molecular Formula: | C165H269N47O46 |
| Molecular Weight (g/mol): | 3647.25 |
| Amino Acid Count: | 30 |
| Amino Acid Sequence: | GHRH(1-29)-Lys(N-epsilon-maleimidopropionamide) amide, DAC-modified 30-aa analogue |
| Synonyms / Other Names: | CJC-1295 with DAC, CJC-1295 DAC, DAC:GRF, Mod GRF 1-29 + DAC |
| Appearance: | White to off-white lyophilized powder |
| Purity: | ≥99% (HPLC) |
| Solubility: | Soluble in bacteriostatic water |
| Storage (Sealed): | Freeze ≤ −20 °C, sealed, away from light & moisture; stable ~24 months |
| Storage (After Reconstitution): | Refrigerate 2–8 °C; use within 28–30 days; avoid repeated freeze-thaw |
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Key Benefits
What You Get
CJC with DAC 5mg is a long-acting growth hormone–releasing peptide designed to deliver sustained increases in GH and IGF-1 levels. With its extended half-life, it reduces injection frequency while supporting muscle growth, fat metabolism, recovery, and overall vitality.

Long-Lasting GH Release
The DAC modification allows for prolonged activity, helping maintain consistent growth hormone levels over time with fewer administrations.
Muscle Growth & Fat Metabolism
Commonly explored for its potential role in muscle recovery and fat metabolism when combined with proper training and nutrition.
Recovery, Sleep & Anti-Aging
Promotes faster tissue repair, improves deep sleep quality, and supports cognitive clarity along with healthier skin and overall longevity.
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Common Questions
Frequently Asked Questions
What does DAC mean and how does it affect CJC-1295? +
DAC stands for Drug Affinity Complex, a maleimide modification attached to the lysine residue of CJC-1295. It allows the peptide to bind to albumin in the bloodstream, dramatically extending its half-life from minutes to approximately 6–8 days. This enables less frequent dosing compared to CJC-1295 without DAC.
How much BAC water should I add to a 5mg CJC with DAC vial? +
A standard reconstitution for a 5mg vial is 1–2 mL of bacteriostatic water. Adding 1 mL gives 5 mg/mL (5,000 mcg/mL). At this concentration, a 1,000 mcg (1 mg) dose = 20 units on a U-100 syringe. Use the calculator on this page for your specific dose.
How many doses does a 5mg CJC with DAC vial provide? +
With 1 mL BAC water added (5 mg/mL), a 5mg vial provides approximately 5 doses at 1,000 mcg per dose, or 10 doses at 500 mcg. The extended half-life of CJC with DAC means research protocols typically use it once or twice weekly rather than daily.
What is the difference between CJC with DAC and CJC without DAC (Mod GRF 1-29)? +
CJC without DAC (Mod GRF 1-29) has a short half-life of approximately 30 minutes and is typically used immediately before sleep or with a GHRP like Ipamorelin. CJC with DAC has an approximately 6–8 day half-life due to albumin binding, making it suited for less frequent dosing. The two have different research protocol requirements.
Can CJC with DAC be combined with Ipamorelin? +
Yes, CJC-1295 with DAC and Ipamorelin are among the most commonly combined peptides in growth hormone research. CJC provides a sustained GHRH signal while Ipamorelin provides a selective GHS-R pulse, creating a synergistic effect on GH release without significantly raising cortisol.







