CJC-1295 (no DAC) is a synthetic analog of growth hormone-releasing hormone that contains 29 amino acids. The “no DAC” designation refers to the absence of Drug Affinity Complex, which distinguishes it from CJC-1295 with DAC. This peptide was developed to enhance the natural release of growth hormone from the anterior pituitary gland while maintaining the body’s natural circadian rhythm of hormone production.
Unlike its DAC counterpart, CJC-1295 (no DAC) has a shorter half-life of approximately 30 minutes, which allows for more precise control over growth hormone release patterns. This characteristic makes it particularly valuable for research applications where natural physiological responses are desired.

How CJC-1295 (no DAC) Works?
CJC-1295 (no DAC) functions by binding to growth hormone-releasing hormone receptors (GHRH-R) located on somatotroph cells in the anterior pituitary gland. Upon binding, it activates the cyclic adenosine monophosphate (cAMP) signaling pathway, which leads to increased synthesis and release of growth hormone.
The peptide’s mechanism involves several key steps. First, it binds to GHRH receptors with high affinity, triggering conformational changes in the receptor. This activation stimulates adenylyl cyclase, increasing intracellular cAMP levels. The elevated cAMP then activates protein kinase A, which phosphorylates various transcription factors, ultimately leading to increased growth hormone gene expression and hormone release.
What sets CJC-1295 (no DAC) apart is its ability to preserve the natural pulsatile pattern of growth hormone release. This is crucial because growth hormone naturally fluctuates throughout the day, with peak levels occurring during deep sleep and exercise.
Benefits of CJC-1295 (no DAC)
Enhanced Muscle Growth and Recovery
CJC-1295 (no DAC) primarily works by increasing growth hormone levels, which can support muscle protein synthesis. This effect may lead to improved muscle mass and faster recovery from exercise-induced stress, making it beneficial for athletes and individuals engaged in regular physical activity.
Improved Sleep Quality
Growth hormone plays a key role in regulating sleep cycles. CJC-1295 (no DAC) has been shown to enhance sleep quality and duration, particularly the deep sleep phases, which are critical for recovery, cognitive function, and overall well-being.
Metabolic Benefits
The peptide may positively influence metabolic processes, including fat oxidation and glucose metabolism. These effects can contribute to improved body composition and support healthy weight management.
Bone Health Support
By elevating growth hormone levels, CJC-1295 (no DAC) may also support bone metabolism, helping maintain bone density and overall skeletal health over time.
Targeted Mechanism
Similar to peptides such as BPC-157, which focus on healing and recovery, CJC-1295 (no DAC) provides targeted benefits through its specific action on growth hormone pathways, offering systemic improvements in muscle, metabolism, and skeletal function.
Dosage and Administration
Research protocols for CJC-1295 (no DAC) typically involve subcutaneous injection, with dosages ranging from 100 to 200 micrograms per administration. The peptide is commonly administered 1-3 times daily, often before meals or bedtime to align with natural growth hormone release patterns.
Due to its short half-life, CJC-1295 (no DAC) is frequently combined with growth hormone-releasing peptides (GHRPs) such as GHRP-2, GHRP-6, or Ipamorelin to create a synergistic effect. This combination approach can enhance the overall growth hormone response while maintaining natural pulsatile patterns.
Timing of administration is crucial for optimal results. Many research protocols suggest administering the peptide on an empty stomach, typically 2-3 hours after the last meal, to maximize absorption and effectiveness.
Storage and Stability
Proper storage of CJC-1295 (no DAC) is essential for maintaining its stability and biological activity. The lyophilized (freeze-dried) powder form should be stored at temperatures between 2-8°C (36-46°F) in a refrigerator, protected from light and moisture.
Once reconstituted with bacteriostatic water, the peptide solution should be stored in the refrigerator and used within 2-4 weeks for optimal potency. Freezing the reconstituted solution is not recommended as it may damage the peptide structure and reduce effectiveness.
During transport or short-term storage, the lyophilized form can tolerate room temperature for brief periods, but refrigeration should be resumed as soon as possible to ensure maximum stability.
Potential Side Effects
Injection Site Reactions
CJC-1295 (no DAC) may cause mild injection site reactions, including redness, swelling, or irritation. These effects are usually temporary and resolve on their own with proper administration technique.
Transient Systemic Effects
Some individuals report temporary side effects such as headaches, dizziness, or mild nausea, particularly during the initial phase of use. These symptoms typically diminish as the body adapts to the peptide.
Individual Variability
Responses to CJC-1295 (no DAC) can vary significantly between individuals. Careful monitoring and adherence to recommended protocols are essential to minimize risks and ensure safe and effective use.
FAQs
Q1. How does CJC-1295 (no DAC) differ from CJC-1295 with DAC?
Ans: The primary difference lies in the half-life and release pattern. CJC-1295 (no DAC) has a shorter half-life of about 30 minutes, allowing for natural pulsatile growth hormone release, while the DAC version has an extended half-life of several days with continuous hormone elevation.
Q2. Can CJC-1295 (no DAC) be combined with other peptides?
Ans: Yes, research protocols often combine CJC-1295 (no DAC) with growth hormone-releasing peptides (GHRPs) to create synergistic effects. This combination approach can enhance overall growth hormone response while maintaining natural release patterns.
Q3. What is the optimal timing for CJC-1295 (no DAC) administration?
Ans: Research suggests administering CJC-1295 (no DAC) on an empty stomach, typically 2-3 hours after meals or before bedtime, to align with natural growth hormone release patterns and maximize absorption.
Q4. How long does it take to see effects from CJC-1295 (no DAC)?
Ans: Research indicates that acute effects on growth hormone levels can be observed within 15-30 minutes of administration, while longer-term benefits such as improved sleep quality and body composition changes may take several weeks to become apparent.
Q5. Is CJC-1295 (no DAC) stable at room temperature?
Ans: While the lyophilized form can tolerate brief periods at room temperature, refrigeration at 2-8°C is recommended for optimal stability. Once reconstituted, the solution should be kept refrigerated and used within 2-4 weeks.
Final Thoughts
CJC-1295 (no DAC) represents a significant advancement in growth hormone research, offering researchers a tool that closely mimics natural physiological processes. Its ability to stimulate growth hormone release while maintaining natural pulsatile patterns makes it particularly valuable for studies examining the role of growth hormone in various biological processes.
The peptide’s favorable safety profile, combined with its research-backed benefits, continues to make it a popular choice among researchers studying growth hormone physiology, sleep optimization, and metabolic processes. As research continues to evolve, CJC-1295 (no DAC) remains an important tool for advancing our understanding of growth hormone’s role in human health and performance.
For researchers considering CJC-1295 (no DAC) for their studies, proper protocol design, storage considerations, and safety monitoring remain paramount. The peptide’s unique characteristics offer exciting possibilities for future research applications and continued scientific discovery.
