A growth hormone support peptide used with DAC or no-DAC protocols. Calculate your dose and understand how it pairs with ipamorelin.
Pre-filled with typical cjc-1295 values. Adjust to match your vial and protocol.
CJC-1295 is a synthetic analog of growth hormone releasing hormone (GHRH) that stimulates the pituitary gland to produce and release growth hormone (GH). It comes in two forms: CJC-1295 with DAC (Drug Affinity Complex) and CJC-1295 without DAC (also called Modified GRF 1-29 or Mod GRF).
The DAC version binds to albumin in the bloodstream, dramatically extending its half-life to approximately 8 days and creating a sustained elevation of growth hormone. The no-DAC version (Mod GRF 1-29) has a short half-life of about 30 minutes and produces sharp, pulsatile GH release that more closely mimics natural physiology. It is most commonly paired with a GHRP (growth hormone releasing peptide) like ipamorelin for synergistic effects.
Below are common dosing protocols for cjc-1295 based on available research and community experience:
| Protocol | Dose | Notes |
|---|---|---|
| CJC-1295 no DAC + Ipamorelin | 100 mcg each | 2-3x daily (morning, post-workout, before bed) |
| CJC-1295 with DAC only | 1-2 mg | 2x per week |
| Pre-bed protocol | 100 mcg CJC + 100 mcg Ipam | 30 min before sleep on empty stomach |
| Typical Cycle Length | 8-12 weeks | Followed by 4 weeks off |
Ready to calculate? Use the calculator above or our full calculator with syringe visualization.
CJC-1295 comes as a lyophilized (freeze-dried) powder that must be reconstituted with bacteriostatic water before use. The process is standard for all peptides:
For a detailed step-by-step guide with visuals, see our complete peptide reconstitution guide.
Understanding potential side effects helps you use cjc-1295 more safely. Most side effects are dose-dependent and may improve over time.
Before reconstitution: Store lyophilized (powder) cjc-1295 in a cool, dry place away from direct sunlight. Refrigeration is ideal for long-term storage of unreconstituted peptides.
After reconstitution: Store the reconstituted vial upright in a refrigerator at 36-46°F (2-8°C). Do not freeze. The solution typically remains stable for 4-6 weeks. Always swab the vial stopper with an alcohol pad before each use.
The most popular CJC-1295 protocol combines it with ipamorelin at equal doses. A standard stack looks like:
The pre-bed dose is the most important as it synergizes with your body's natural nighttime GH pulse. Each peptide is drawn from its own reconstituted vial into the same syringe for a single injection. Use our full CJC-1295 + Ipamorelin stack guide or the ipamorelin calculator to dial in the correct draw volume.
Looking for a different peptide? Each calculator is pre-filled with standard dosing values.