Contraindications: This peptide has 5 known contraindication(s). See Safety section
Growth HormoneUse Caution

CJC-1295 no DAC

Also known as: CJC-1295 without DAC, Modified GRF 1-29, Mod GRF 1-29, Sermorelin analog

Research Only
Preclinical
MW: 3367.9 g/mol • 119 amino acids

CJC-1295 no DAC is a growth hormone-releasing hormone (GHRH) analog that stimulates natural growth hormone production. It provides similar benefits to CJC-1295 with DAC but with a shorter duration of action, requiring more frequent dosing.

â–¶ CJC-1295 no DAC in 30 Seconds

Research overview only. Not medical advice.

Half-Life

30 minutes

Typical Dose

100-200 mcg

Frequency

1-3x daily

Routes

Subcutaneous

Half-Life Visualization

Comparing 3 peptides. CJC-1295 no DAC has a half-life of 0.5h, reaching 50% concentration at 0.5h and 25% at 1h. CJC-1295 with DAC has a half-life of 7d, reaching 50% concentration at 7d and 25% at 14d. Ipamorelin has a half-life of 2h, reaching 50% concentration at 2h and 25% at 4h.

Half-Life Decay Curve

Concentration over time assuming initial dose = 100%

CJC-1295 no DAC(t1/2: 0.5h +/- 0.25h)
CJC-1295 with DAC(t1/2: 7d +/- 1d)
Ipamorelin(t1/2: 2h +/- 0.5h)
Peptide Half-Life Comparison ChartVisualization showing how peptide concentrations decay over time. CJC-1295 no DAC has a half-life of 0.5h. CJC-1295 with DAC has a half-life of 7d. Ipamorelin has a half-life of 2h.

Use arrow keys to navigate: Left/Right for time, Up/Down for peptides

Shaded areas represent reported half-life variability from published studies.

PeptideHalf-Life50% at25% at12.5% atRedose Window
CJC-1295 no DAC
0.5h0.5h1h1.5h0.5h - 1h
CJC-1295 with DAC
7d7d14d21d7d - 14d
Ipamorelin
2h2h4h6h2h - 4h

Comparing CJC-1295 no DAC with CJC-1295 with DAC and Ipamorelin

Open Full Comparison Tool

Overview

CJC-1295 no DAC (Drug Affinity Complex) is a synthetic analog of growth hormone-releasing hormone (GHRH) designed to stimulate the natural production and release of growth hormone from the pituitary gland. Unlike its counterpart CJC-1295 with DAC, this version lacks the drug affinity complex modification, resulting in a significantly shorter half-life and duration of action.

This peptide consists of the first 29 amino acids of GHRH with specific modifications to enhance stability and potency while maintaining the natural pulsatile pattern of growth hormone release. Research suggests it may support increased growth hormone levels, improved body composition, enhanced recovery, and better sleep quality, though human clinical data remains limited.

CJC-1295 no DAC is often preferred by researchers for its more natural mimicking of physiological growth hormone patterns, though it requires more frequent administration compared to the DAC version.

Mechanism of Action

CJC-1295 no DAC functions as a growth hormone-releasing hormone (GHRH) receptor agonist. Upon subcutaneous administration, the peptide binds to GHRH receptors located on somatotroph cells within the anterior pituitary gland. This binding activates adenylyl cyclase, leading to increased cyclic adenosine monophosphate (cAMP) levels within the cell.

The elevated cAMP triggers a cascade of intracellular signaling events that ultimately stimulate the synthesis and release of endogenous growth hormone. Unlike exogenous growth hormone administration, this mechanism preserves the body's natural regulatory feedback loops, maintaining physiological control over growth hormone secretion patterns.

The peptide's modifications include substitutions at positions 2, 8, 15, and 27 of the native GHRH sequence, which enhance resistance to enzymatic degradation while preserving receptor binding affinity. The absence of the DAC modification means the peptide is cleared more rapidly from circulation, typically within 30 minutes, allowing for more precise timing of growth hormone pulses.

Research Summary

Limited published research exists specifically on CJC-1295 no DAC, with most studies focusing on the DAC version or related GHRH analogs. The available preclinical data suggests the peptide effectively stimulates growth hormone release in animal models, with peak effects occurring 15-30 minutes post-administration.

Key Studies

Preclinical Growth Hormone Stimulation Animal studies indicate that CJC-1295 no DAC produces dose-dependent increases in growth hormone levels, with effects lasting 1-3 hours post-injection. Studies suggest optimal dosing ranges of 1-2 mcg/kg body weight for maximal growth hormone response.

Comparative Pharmacokinetics Research comparing GHRH analogs shows that modifications present in CJC-1295 no DAC provide enhanced stability compared to native GHRH while maintaining rapid clearance. The peptide demonstrates consistent bioavailability via subcutaneous administration across multiple animal species.

Safety Assessments Limited toxicology studies suggest good tolerability at therapeutic doses, with no significant adverse effects observed in short-term animal studies. Long-term safety data and human clinical trials are not yet available.

Dosage Guidelines

Dosing protocols for CJC-1295 no DAC are based on preclinical research and anecdotal reports, as formal human dosing studies have not been completed. The short half-life necessitates multiple daily administrations to maintain elevated growth hormone levels.

ParameterValue
Typical dose100-200 mcg
Frequency1-3x daily
Cycle length8-12 weeks
AdministrationSubcutaneous

Timing Considerations:

  • Often administered before meals when growth hormone naturally peaks
  • Common timing: upon waking, pre-workout, and before bed
  • Should be taken on an empty stomach for optimal absorption
  • Allow 3-4 hours between doses when using multiple daily injections

Reconstitution:

  • Typically supplied as lyophilized powder requiring bacteriostatic water reconstitution
  • Standard concentration: 2mg/2mL bacteriostatic water
  • Store reconstituted solution refrigerated and use within 14 days

Safety Profile

The safety profile of CJC-1295 no DAC is not yet established in human studies. Theoretical risks are extrapolated from growth hormone physiology and related peptide research. The shorter duration of action compared to CJC-1295 with DAC may reduce some risks associated with prolonged growth hormone elevation.

Potential Side Effects:

  • Injection site reactions (redness, swelling, irritation)
  • Water retention and mild edema
  • Numbness or tingling in extremities
  • Increased hunger, especially carbohydrate cravings
  • Fatigue or drowsiness (particularly with evening doses)
  • Headaches during initial use

Monitoring Recommendations:

  • Regular assessment of injection sites for adverse reactions
  • Periodic evaluation of glucose tolerance
  • Monitoring for signs of excessive growth hormone activity
  • Assessment of overall well-being and energy levels

Long-term Considerations: Long-term effects of CJC-1295 no DAC use are unknown. Theoretical concerns include potential impacts on glucose metabolism, insulin sensitivity, and cellular growth processes. Regular medical supervision is recommended for extended use periods.

Stacking

CJC-1295 no DAC is frequently combined with growth hormone-releasing peptides (GHRPs) to maximize growth hormone stimulation through complementary pathways. The GHRH analog works synergistically with GHRPs, which act on different receptors to amplify overall growth hormone release.

Common Combinations:

CJC-1295 no DAC + Ipamorelin: The most popular research combination, pairing GHRH stimulation with selective ghrelin receptor activation. Typical protocols use equal doses of each peptide (100-200 mcg) administered simultaneously 1-3 times daily. This combination may provide enhanced growth hormone release while maintaining selectivity and minimizing side effects.

CJC-1295 no DAC + GHRP-2: A potent combination for maximum growth hormone stimulation. GHRP-2 provides broader receptor activation compared to ipamorelin but may increase appetite and cortisol more significantly. Dosing typically involves 100-200 mcg of each peptide, administered together.

Timing Protocols:

  • Morning: 30 minutes before breakfast
  • Pre-workout: 15-30 minutes before training
  • Evening: 2-3 hours after last meal, before bed

Cycle Considerations: Research protocols typically involve 8-12 week cycles with 4-8 week breaks to prevent receptor desensitization and maintain natural growth hormone production patterns.

Compare CJC-1295 no DAC Prices

3 vendors
VendorQuantityPrice$/mg
Core PeptidesBest Value
10mg$73.00$7.30/mgView Deal
Core Peptides
5mg$41.00$8.20/mgView Deal
Biotech Peptides
10mg$84.00$8.40/mgView Deal

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Where to Buy CJC-1295 no DAC

Compare prices from 3 vendors • Best value: $7.30/mg

Full Comparison
Core Peptides

10

$73.00

$7.30/mg

Core Peptides

5

$41.00

$8.20/mg

Biotech Peptides

10

$84.00

$8.40/mg

Disclaimer: These products are sold for research purposes only. Prices and availability may change. Prices as of 4/2/2026.

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