CJC-1295 DAC
Modified Growth Hormone Releasing Factor (GRF) 1-29
CJC-1295 DAC represents a significant advancement in growth hormone-releasing hormone (GHRH) analog technology, offering researchers and clinicians a modified peptide with extended duration of action. This synthetic compound, formally known as Modified Growth Hormone Releasing Factor (GRF) 1-29, incorporates Drug Affinity Complex technology that dramatically extends its half-life to 6-8 days through albumin binding. Unlike traditional GHRH compounds that require frequent dosing, CJC-1295 DAC provides sustained stimulation of natural growth hormone production with less frequent administration. The peptide works by binding to GHRH receptors in the pituitary gland, triggering the release of endogenous growth hormone while maintaining physiological regulatory mechanisms. Research interest in CJC-1295 DAC continues to grow due to its potential applications in growth hormone deficiency, body composition optimization, and anti-aging research, though comprehensive clinical trials remain limited.
Medical Disclaimer
This content is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before using any peptide.Read full disclaimer

Mechanism of Action
CJC-1295 DAC (Drug Affinity Complex) represents a sophisticated advancement in growth hormone-releasing hormone (GHRH) analog technology. This synthetic peptide is a modified version of the naturally occurring growth hormone-releasing factor (GRF) 1-29, engineered with enhanced stability and prolonged activity. The peptide functions by binding to specific GHRH receptors located on somatotroph cells within the anterior pituitary gland, triggering a cascade of intracellular signaling events that ultimately stimulate the synthesis and release of endogenous growth hormone. The key innovation of CJC-1295 DAC lies in its Drug Affinity Complex technology, which involves the covalent attachment of a maleimide group that binds to circulating albumin proteins in the bloodstream. This albumin binding creates a reservoir effect, dramatically extending the peptide's half-life from minutes to approximately 6-8 days. This extended duration allows for less frequent dosing while maintaining consistent growth hormone stimulation. Unlike direct growth hormone administration, CJC-1295 DAC works through the body's natural regulatory mechanisms, preserving the pulsatile nature of growth hormone release. This approach maintains the physiological feedback loops that prevent excessive growth hormone levels, potentially reducing the risk of side effects associated with supraphysiological hormone concentrations. The peptide's action results in increased IGF-1 (insulin-like growth factor-1) production in the liver, which mediates many of growth hormone's anabolic and metabolic effects throughout the body.
Potential Benefits
CJC-1295 DAC offers a range of potential benefits primarily centered around its ability to enhance natural growth hormone production. Research suggests that increased growth hormone levels may support improved body composition through enhanced lipolysis (fat breakdown) and protein synthesis, potentially leading to reduced body fat percentage and increased lean muscle mass. The peptide's effects on metabolism may also contribute to improved energy levels and enhanced recovery from physical stress or exercise. Beyond body composition changes, CJC-1295 DAC may influence various aspects of health and wellness. Studies indicate that growth hormone plays crucial roles in bone density maintenance, immune system function, and cellular repair processes. Users often report improvements in sleep quality, which may be attributed to growth hormone's natural release pattern during deep sleep phases. Additionally, the peptide's potential effects on collagen synthesis could contribute to improved skin elasticity and overall appearance, though these cosmetic benefits require further clinical validation. It's important to note that while these benefits are supported by research on growth hormone physiology, specific clinical trials on CJC-1295 DAC in healthy individuals are limited. The peptide's effects may vary significantly between individuals based on factors such as age, baseline hormone levels, lifestyle, and genetic factors. As with any research compound, potential benefits should be weighed against possible risks and individual health considerations.
Common Use Cases
Dosage & Administration
Dosage protocols for CJC-1295 DAC in research settings typically follow a conservative approach due to the peptide's extended duration of action. Most research protocols begin with doses ranging from 1-2 mg administered subcutaneously, with frequency varying from once weekly to twice weekly depending on individual response and research objectives. The extended half-life of 6-8 days allows for less frequent dosing compared to other peptides, making it more convenient for research applications. When initiating research with CJC-1295 DAC, many protocols suggest starting at the lower end of the dosing range (approximately 1 mg) to assess individual tolerance and response. The peptide is typically reconstituted with bacteriostatic water and administered via subcutaneous injection, commonly in the abdominal area. Injection sites should be rotated to prevent tissue irritation or lipodystrophy. Some research suggests that evening administration may be preferable to align with natural growth hormone release patterns, though this timing consideration requires further validation. Dosage adjustments in research settings are often based on IGF-1 level monitoring and observed physiological responses. Factors influencing dosage considerations include body weight, age, baseline growth hormone status, and individual sensitivity to the compound. Research protocols typically involve treatment periods of 8-12 weeks with appropriate monitoring intervals. It's crucial to emphasize that these dosage guidelines are for research purposes only, as CJC-1295 DAC is not approved for therapeutic use, and any administration should occur under appropriate medical supervision and institutional oversight.
Safety Information
Common Side Effects
Contraindications
Drug Interactions
Long-Term Safety
Long-term use of CJC-1295 DAC is not well-studied, but prolonged use may lead to desensitization of growth hormone receptors or increased risk of side effects such as water retention and joint pain.
Research & Clinical Evidence
Research on CJC-1295 DAC is primarily derived from studies on growth hormone-releasing hormone analogs and growth hormone physiology, as specific large-scale clinical trials on this exact compound are limited. Early research by Teichman et al. demonstrated that GHRH analogs with extended half-lives could effectively stimulate growth hormone release in both animal models and human subjects. A notable study published in the Journal of Clinical Endocrinology & Metabolism showed that modified GHRH compounds could increase IGF-1 levels by 1.5-3 fold in healthy adults over several weeks of treatment. Preclinical studies have indicated that CJC-1295 DAC maintains the pulsatile nature of growth hormone release while providing sustained stimulation, potentially offering advantages over continuous growth hormone administration. Research has shown that the albumin-binding modification successfully extends the peptide's half-life without significantly altering its receptor binding affinity or biological activity. Animal studies have demonstrated improvements in body composition, with increases in lean mass and decreases in fat mass observed over treatment periods of 4-12 weeks. However, comprehensive Phase III clinical trials specifically evaluating CJC-1295 DAC's safety and efficacy in various populations are lacking. Most available data comes from smaller studies, case reports, and research on related compounds. The limited clinical evidence means that optimal dosing protocols, long-term safety profiles, and specific therapeutic applications remain areas requiring further investigation. Current research efforts are focusing on understanding individual response variability and potential therapeutic applications in growth hormone deficiency states.