Research use only.  Educational reference. Not medical advice. Not for human consumption.
📈 Long-Acting GHRH Analog

CJC-1295 with DAC (5 mg Vial) Dosage Protocol

CJC-1295 with DAC (Drug Affinity Complex) is a GHRH analog modified with a maleimide group that covalently binds serum albumin, extending half-life from minutes to ~6–8 days.

⚡ Quickstart Highlights

Vial contents
5 mg CJC-1295 DAC
Final volume
2 mL
Concentration
2.5 mg/mL
One U-100 unit
25 mcg in 0.01 mL

Dosing & Reconstitution Guide

Educational guide for reconstitution and twice-weekly dosing

Standard / Gradual Approach (2 mL = 2500 mcg/mL)

WeekPer-Injection Dose (mcg)Units (per injection) (mL)Weekly Total
Weeks 1–2300 mcg (0.3 mg)12 units (0.12 mL)600 mcg/week
Weeks 3–4500 mcg (0.5 mg)20 units (0.20 mL)1000 mcg/week
Weeks 5–6750 mcg (0.75 mg)30 units (0.30 mL)1500 mcg/week
Weeks 7–121000 mcg (1 mg)40 units (0.40 mL)2000 mcg/week

Frequency: Inject twice weekly subcutaneously (e.g., Monday/Thursday or Tuesday/Friday). The extended 6–8-day half-life from the DAC modification supports less frequent dosing compared to non-DAC GHRH analogs. Once-weekly dosing is also studied; adjust frequency based on protocol requirements.

For ≤10-unit (≤0.10 mL) administrations, consider 30- or 50-unit insulin syringes for improved readability.

Reconstitution Steps

  1. Draw 2.0 mL bacteriostatic water with a sterile syringe.
  2. Inject slowly down the vial wall; avoid foaming or direct stream onto the powder.
  3. Gently swirl/roll until dissolved (do not shake vigorously).
  4. Label with reconstitution date and refrigerate at 2–8 °C (35.6–46.4 °F), protected from light.

Important: This guide is for educational purposes only and is not medical advice. This content is intended for therapeutic educational purposes only and does not constitute medical advice, diagnosis, or treatment.

Supplies Needed

Plan based on an 8–16 week twice-weekly protocol with gradual titration.

ItemQuantity
Peptide Vials (CJC-1295 DAC, 5 mg each)8 weeks: approximately 3 vials required (~10.2 mg total)
12 weeks: approximately 4 vials required (~18.2 mg total)
16 weeks: approximately 6 vials required (~26.2 mg total)
Insulin Syringes (U-100)Per week: 2 syringes (twice weekly)
8 weeks: 16 syringes
12 weeks: 24 syringes
16 weeks: 32 syringes
Bacteriostatic Water (10 mL bottles)8 weeks (3 vials): 6 mL — 1 bottle required (10 mL each)
12 weeks (4 vials): 8 mL — 1 bottle required (10 mL each)
16 weeks (6 vials): 12 mL — 2 bottles required (10 mL each)
Alcohol SwabsPer week: 4 swabs (2 per injection × 2 injections)
8 weeks: 32 swabs — 1 box required (100 swabs each)
12 weeks: 48 swabs — 1 box required (100 swabs each)
16 weeks: 64 swabs — 1 box required (100 swabs each)

Storage Instructions

StateTemperatureDuration
Lyophilized−20°C (−4°F)Up to 24 months, dry & dark
Reconstituted2–8°C (35–46°F)Up to 28 days, protect from light

Important Notes

⚠ Research Use Only: CJC-1295 with DAC is investigational. Limited human clinical trial data.

How This Works

CJC-1295 is a synthetic GHRH analog with four amino acid substitutions (D-Ala2, Gln8, Ala15, Leu27) for stability against DPP-4. The DAC version adds a maleimide N-(2-aminoethyl)-2-maleimide group that covalently attaches to serum albumin via a free cysteine, extending half-life dramatically.

It binds pituitary GHRH receptors, raising baseline GH and IGF-1 levels for sustained periods. The continuous elevation differs from physiological pulsatile GH and is one reason combinations with GHRPs (ipamorelin) are popular — GHRPs provide pulsatile peaks atop CJC-1295's elevated baseline.

Potential Benefits & Side Effects

Potential Benefits

Side Effect Profile

Lifestyle Factors

Injection Technique

References

1
Teichman SL et al. 'Prolonged stimulation of GH and IGF-I by CJC-1295' — JCEM, 2006 View source ↗