CJC-1295

moderate
Modified GRF 1-29CJC-1295 DACGrowth Hormone Releasing Hormone analog

A synthetic GHRH analog that extends growth hormone release duration through its unique Drug Affinity Complex (DAC).

Category
growth hormone
Dosage
1-2 mg twice weekly (with DAC) or 100-300 mcg 2-3x daily (without DAC)
Half-Life
6-8 days (with DAC), 30 minutes (without DAC)
Administration
Subcutaneous injection, typically at bedtime

Overview

CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH) that contains a Drug Affinity Complex (DAC) which significantly extends its half-life. This modification allows it to bind to albumin in the blood, providing sustained GH release for days rather than minutes.

Developed to treat lipodystrophy and GH deficiency, clinical trials showed significant increases in GH and IGF-1 levels. It's commonly stacked with Ipamorelin for synergistic effects. The DAC modification makes it different from MOD GRF 1-29, providing longer-lasting effects but potentially increased side effects.

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Benefits

  • Sustained GH release (3-7 days)
  • Increased IGF-1 production
  • Improved body composition
  • Enhanced fat metabolism
  • Better recovery and sleep quality
  • Increased collagen synthesis

Side Effects

  • Injection site reactions (redness, swelling, itching)
  • Flushing
  • Headache and nausea
  • Water retention
  • Potential desensitization with prolonged use
  • Rare: allergic reactions

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Quick Comparison Guide

Quality
COA + 3rd party testing required
Purity
≥95% minimum standard
Storage
Lyophilized powder preferred
Shipping
Cold chain when needed

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Frequently Asked Questions

What is CJC-1295 and how does it work?
CJC-1295 is a growth hormone-releasing hormone (GHRH) analog that stimulates natural growth hormone production. The DAC (Drug Affinity Complex) version has an extended half-life, providing sustained growth hormone elevation for up to a week.
CJC-1295 with DAC vs without DAC - what's the difference?
CJC-1295 with DAC has an extended half-life of 6-8 days and provides sustained growth hormone elevation. The version without DAC (Mod-GRF 1-29) has a 30-minute half-life and creates pulsatile growth hormone release, which may be more physiological.
What is the typical CJC-1295 dosage?
For CJC-1295 with DAC: 1-2 mg once or twice weekly. For CJC-1295 without DAC (Mod-GRF): 100-200 mcg administered 1-3 times daily, often combined with ipamorelin for synergistic effects.
Can CJC-1295 be combined with other peptides?
Yes, CJC-1295 is commonly stacked with GHRP peptides like ipamorelin for enhanced growth hormone release. The combination provides both sustained (CJC-1295) and pulsatile (GHRP) stimulation, mimicking natural patterns.
What are the benefits of CJC-1295 research?
Research suggests CJC-1295 may support increased lean muscle mass, improved fat metabolism, better sleep quality, enhanced recovery, improved skin health, and potential anti-aging effects through sustained growth hormone elevation.
Is CJC-1295 safe?
Clinical trials have shown CJC-1295 to be generally well-tolerated. A Phase II study demonstrated sustained GH and IGF-1 elevation with manageable side effects. Common side effects include injection site reactions, headache, water retention, and tingling in extremities. However, one clinical trial participant death (attributed to cardiac causes) led to increased scrutiny. Long-term safety data is limited. It is not FDA-approved for therapeutic use and should only be used under medical supervision.
Does CJC-1295 increase testosterone?
CJC-1295 does not directly increase testosterone. It stimulates growth hormone release, which is a separate hormonal pathway. However, optimized growth hormone levels can indirectly support testosterone production by improving overall endocrine function, sleep quality, and body composition — all of which contribute to healthy testosterone levels. For direct testosterone optimization, other interventions are more appropriate.
How long does CJC-1295 take to work?
CJC-1295 with DAC begins elevating growth hormone levels within hours of the first injection, with peak GH levels occurring 2-10 days into treatment. However, noticeable physical benefits like improved sleep typically appear within 1-2 weeks, while body composition changes (muscle gain, fat loss) develop over 8-12 weeks. IGF-1 levels typically stabilize after 2-4 weeks of consistent use.
When should I inject CJC-1295?
For CJC-1295 without DAC (Mod-GRF 1-29), inject before bed on an empty stomach to synergize with natural nighttime GH pulses — often combined with Ipamorelin. For CJC-1295 with DAC, timing is less critical due to its long half-life; most protocols use once or twice weekly injections. Avoid injecting within 2 hours of eating, as insulin and blood sugar spikes significantly blunt GH release.
Can CJC-1295 cause water retention?
Yes, water retention is one of the more common side effects of CJC-1295, particularly with the DAC version. Elevated growth hormone levels increase sodium reabsorption in the kidneys, leading to fluid retention. This is usually mild and manifests as slight puffiness in hands, feet, or face. It typically subsides after the first few weeks as the body adjusts. Staying hydrated and moderating sodium intake can help manage this side effect.
What is the CJC-1295 and Ipamorelin stack?
The CJC-1295/Ipamorelin stack is the most popular growth hormone peptide combination. CJC-1295 (a GHRH analog) provides the "signal" for GH release, while Ipamorelin (a GHRP) amplifies that signal by acting on ghrelin receptors. Together, they produce a synergistic GH pulse significantly greater than either peptide alone. A typical stack uses 100mcg Mod-GRF 1-29 with 100-200mcg Ipamorelin, injected 1-3 times daily before meals and at bedtime.

⚠ Research Disclaimer: This information is for educational purposes only and is not medical advice. Consult a qualified healthcare professional before using CJC-1295 or any peptide. See our full medical disclaimer.

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