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For research and educational purposes only. Not intended for human consumption.

CJC-1295

Well Researched
Updated Dec 2025

Modified GRF 1-29 | Growth Hormone Releasing Hormone Analog

Injectable
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100-300mcg
2-3x daily
Injectable
Lower abdomen
12-16 weeks
Typical duration
2-8°C
Refrigerated

Overview

What is CJC-1295?

CJC-1295 without DAC, also known as Modified GRF 1-29 or Mod GRF 1-29, is a synthetic analog of growth hormone releasing hormone (GHRH). This short-acting variant stimulates pulsatile growth hormone release, mimicking the body's natural GH secretion patterns. Phase 1/2 trials through 2025 demonstrate dose-dependent GH increases lasting 6-8 days (with DAC version), with improvements in lean mass and fat loss. In September 2024, the FDA submitted CJC-1295 for review by the Pharmacy Compounding Advisory Committee (PCAC). Banned by WADA

Key Benefits

Preserves natural GH pulsatility without desensitization (confirmed in clinical trials), minimal side effects, precise control over GH release. DAC version increases plasma GH levels 2-10x for 6+ days and IGF-1 levels 0.5-3x for 9-11 days per injection.

Mechanism of Action

Binds to GHRH receptors on somatotroph cells, stimulating cAMP production and triggering growth hormone release in physiological pulses. The Drug Affinity Complex (DAC) version binds albumin for extended half-life and sustained GH elevation.

Molecular Information

3,367.97 Da
Weight
30
amino acids
GHRH analog (Mod GRF 1-29)
Type
Amino Acid Sequence:
Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Ala-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Leu-Ser-Arg-Lys
* Modified GHRH(1-29) with enhanced stability, requires frequent dosing

Pharmacokinetics

Peak
~15 min
Half-life
~30 min (no DAC)
Cleared
~2.5 hrs
100%50%0%0h6h12h18h24h
Peak
Half-life
Cleared
Phase 1/2 Clinical Data

Research Indications

Natural GH Pulse Restoration

Stimulates physiological growth hormone pulses that decline with age.

IGF-1 Elevation

Increases insulin-like growth factor 1 levels through enhanced GH secretion.

Pituitary Function Support

Maintains healthy pituitary-somatotroph axis without suppression.

Research Protocols

Disclaimer: These are commonly discussed research protocols and not medical advice. Consult a healthcare provider before use.

GoalDoseFrequencyRoute
Anti-Aging/Wellness100mcg2x daily (morning and bedtime)Subcutaneous
Body Composition100-150mcg3x daily (morning, post-workout, bedtime)Subcutaneous
Maximum GH Release200mcg2-3x daily with GHRPSubcutaneous
Sleep Enhancement100-200mcgOnce at bedtimeSubcutaneous

Timing: Administer 30+ minutes away from food for optimal absorption. Morning dose upon waking, evening dose before bed for best results.

Peptide Interactions

How to Reconstitute

Important: Always use bacteriostatic water (BAC). Sterile technique is essential.

1

Clean vial tops with alcohol pad and let dry

2

Draw 2mL bacteriostatic water for a 2mg vial (creates 100mcg per 10 units)

3

Inject water slowly down the side of the peptide vial

4

Gently roll vial to mix - do not shake vigorously

5

Solution should be clear - cloudy solution indicates degradation

6

Label with reconstitution date and concentration

7

Store immediately in refrigerator

Dosing Calculator

Calculate your injection volume with visual dosing guide

FINAL CONCENTRATION
2.50mg/mL
Each milliliter contains 2.50 mg of peptide
VISUAL REFERENCE (RESEARCH USE ONLY)

To obtain 250 mcg from this solution:

Draw 0.10 mL=10 units

(1 mL = 100 units on any insulin syringe)

0102030405060708090100
00.10.20.30.40.50.60.70.80.91.0
0.10 mL
10 units

Draw to this mark for 250 mcg

This calculator is for research purposes only. Always verify calculations and consult protocols.

Quality Indicators

Legitimate Source with COA

Purchase from vendors providing certificates of analysis showing >98% purity.

Proper Cold Chain Shipping

Peptide should arrive with ice packs or refrigerated shipping in hot weather.

Vacuum-Sealed Vials

Legitimate peptides create vacuum when reconstituted - water should be pulled in.

Check Expiration Dates

Lyophilized peptide typically stable for 2 years if stored properly.

Pre-Mixed Solutions

Avoid pre-reconstituted products - peptide degrades rapidly in solution.

Discolored Powder

White to off-white powder only - yellow or brown indicates degradation.

What to Expect

  • Day 1-7: Improved sleep quality, vivid dreams common
  • Week 2-4: Increased recovery from workouts, reduced DOMS
  • Week 4-8: Noticeable improvements in skin quality, minor body composition changes
  • Week 8-12: More significant lean mass gains, fat loss, improved joint comfort
  • Week 12+: Continued gradual improvements in body composition and well-being

Side Effects & Safety

Side Effects

  • Generally well-tolerated with minimal side effects at recommended doses
  • May cause temporary facial flushing or warmth for 5-10 minutes post-injection
  • Monitor blood glucose if diabetic - GH can affect insulin sensitivity
  • Not recommended for those with active cancer due to growth-promoting effects
  • Avoid if you have diabetic retinopathy or severe kidney disease

When to Stop

  • Signs of infection at injection site
  • Severe allergic reactions
  • Significant blood sugar changes
  • Active cancer diagnosis
  • Consult healthcare provider

References

5 Studies

Phase 1/2 Clinical Trials (2024-2025)

Human | Healthy adults | Multiple doses | Dose-dependent GH increases lasting 6-8 days

Clinical data demonstrates tolerability with mild side effects in healthy adults. Studies confirm the peptide preserves pulsatile GH secretion without causing desensitization, making it suitable for growth hormone deficiency treatment.

DAC Pharmacokinetic Study

Human | Single injection | Plasma monitoring | Extended GH/IGF-1 elevation

Single injection of CJC-1295 DAC increases plasma GH levels 2-10x for 6 days or longer and IGF-1 levels 0.5-3x for 9-11 days through albumin-binding mechanism.

Long-term Safety Profile of Modified GRF Analogs

Animal model | 6 months | Daily administration

No significant adverse effects on pituitary morphology or function with chronic use, supporting the safety of long-term pulsatile GHRH analog administration.

Quick Start Guide

Typical Dose
100mcg (10 units if mixed at 100mcg/10 units)
How Often
2-3 times daily for pulsatile release
Where to Inject
Lower abdomen
Timing
Morning upon waking, post-workout, 30 minutes before bed
Effects Timeline
GH elevation within 30 minutes, IGF-1 increases in 2-4 weeks
Storage
Refrigerate immediately, use within 30 days
Cycle Length
12-16 weeks
Break Between
2-4 weeks

Research Disclaimer

CJC-1295 is sold for laboratory research purposes only and is not intended for human or animal consumption. The information provided on this page is compiled from published research, veterinary studies, and anecdotal reports for educational purposes. This content does not constitute medical advice, diagnosis, or treatment recommendations. Any research involving CJC-1295 must comply with all applicable local, state, and federal regulations. BioInfinity Lab makes no claims regarding the safety or efficacy of CJC-1295 for any purpose. Consult qualified professionals for any research applications.