
CJC-1295 no DAC (also known as modified GRF 1-29) is a synthetic GHRH analog with four amino acid substitutions for improved stability and a short-acting ~30-minute half-life that produces pulsatile GH release mimicking the body's natural secretion pattern. No human clinical trials exist for the no-DAC form. Community protocols are based on GHRH pharmacology and the DAC version's clinical data. This is not medical advice.
Quick Reference: Standard Protocol
| Parameter |
Standard Protocol |
| Dose |
200 mcg |
| Route |
Subcutaneous injection |
| Timing |
PM (before bed, fasted) |
| Frequency |
5 days on, 2 days off |
| Cycle |
8 weeks on, 8 weeks off |
| Vial size |
10 mg |
| Reconstitution |
3 mL bacteriostatic water → 3,333 mcg/mL |
| Draw amount |
6 units on insulin syringe |
| Storage |
Refrigerate, use within 28 days |
The standard protocol is 200 mcg before bed, 5 days on / 2 days off, for 8 weeks. CJC-1295 no DAC is almost always paired with a GHRP (ipamorelin, GHRP-2, or GHRP-6) for synergistic GH release. Standalone use produces modest results.
For the full CJC-1295 peptide profile, vendor pricing, and stack protocols, see our CJC-1295 peptide page.
Cycling: 8 Weeks On, 8 Weeks Off
Run 200 mcg before bed, 5 days on / 2 days off, for 8 weeks. Then take 8 weeks off to allow natural GH axis recovery. No loading phase needed. IGF-1 blood work before, during, and after cycles helps gauge response.
Flushing and head rush are common in the first 1-2 weeks and typically resolve.
PM timing is critical: The pre-bed injection amplifies the natural nocturnal GH surge -- the largest GH pulse of the day. Inject on an empty stomach. Carbohydrates and fats suppress GH release via insulin and somatostatin.
Routes of Administration
Subcutaneous injection (standard): Abdomen, love handles, or thighs. Very small injection volume (typically 0.05-0.06 mL). 29-31 gauge insulin syringe. Rotate sites to prevent lipodystrophy.

Reconstitution Quick Reference
| Vial Size |
BAC Water |
Concentration |
200 mcg Dose |
| 10 mg |
3 mL |
3,333 mcg/mL |
6 units |
Math: 10,000 mcg / 3 mL = 3,333 mcg/mL. For 200 mcg: 200 / 3,333 = 0.06 mL = 6 units. One vial lasts 50 doses.
Swirl gently -- do not shake. Refrigerate at 2-8°C and use within 28 days. For step-by-step instructions, see the CJC-1295 Reconstitution Guide.
Where These Numbers Come From
CJC-1295 clinical research primarily used the DAC version, but the pharmacology informs no-DAC protocols.
Pivotal human study: Teichman et al. examined CJC-1295 (with DAC) in 36 healthy adults (21-61 years). Single doses of 30-120 mcg/kg produced dose-dependent GH and IGF-1 increases, with IGF-1 elevated 1.5-3 fold for 6-14 days (Teichman et al., 2006).
Preserved pulsatility: A follow-up confirmed that despite continuous GHRH stimulation, pulsatile GH secretion was maintained -- GH pulse frequency preserved with 2-fold increases in mean GH and pulse mass (Ionescu & Bhatt, 2006).
Animal studies: CJC-1295 normalized growth in GHRH knockout mice with once-daily dosing (Alba et al., 2006).
Why no-DAC is preferred by many: Short half-life produces pulsatile rather than sustained GH elevation, more closely mimicking natural GHRH/GH secretion. Lower baseline GH between pulses. Controllable timing windows. Optimal synergy with timed GHRP co-injection.
Stacking Protocols
| Stack |
Components |
Purpose |
| Gold Standard |
CJC-1295 no DAC 200 mcg + Ipamorelin 100-200 mcg (PM, same injection) |
GHRH + GHRP synergy, cleanest side effect profile |
| Higher Potency |
CJC-1295 no DAC 200 mcg + GHRP-2 100-200 mcg (PM) |
Stronger GH release, moderate hunger/cortisol |
| Maximum GH |
CJC-1295 no DAC 200 mcg + Hexarelin 100-200 mcg (PM) |
Highest GH output, most side effects, desensitization risk |
Stacking tips: Always inject GHRH + GHRP simultaneously for synergistic effect. Both can be drawn into one insulin syringe. Fasted state critical. Pre-bed injection is the most important timing window.
For the detailed blend protocol, see our CJC-1295 + Ipamorelin Dosing Guide.
Side Effects & Safety
- Flushing/warmth -- very common in first 1-2 weeks, transient (15-30 min post-injection)
- Head rush/dizziness -- brief, typically resolves quickly
- Injection site reactions -- mild redness, occasional irritation
- Water retention -- mild, GH-mediated sodium retention
- Tingling/numbness -- occasional, related to GH effects
- Vivid dreams -- frequently reported, likely from enhanced deep sleep
- Insulin resistance -- chronic GH elevation can impair glucose tolerance (monitor fasting glucose)
- Contraindications -- active malignancy, diabetic retinopathy, pregnancy
Frequently Asked Questions
What is the standard CJC-1295 no DAC dose?
200 mcg subcutaneous before bed (PM), 5 days on / 2 days off, for 8 weeks on / 8 weeks off. Use a 10 mg vial with 3 mL BAC water -- 200 mcg is 6 units. Almost always combined with a GHRP like ipamorelin.
What's the difference between CJC-1295 with and without DAC?
Without DAC: ~30-minute half-life, pulsatile GH release, mimics natural pattern. With DAC: ~8-day half-life, sustained GH elevation, weekly injection, more convenient but less physiological.
Should I take CJC-1295 no DAC alone?
It works alone but produces modest results. Pairing with a GHRP (ipamorelin is most popular) produces 5-10x greater GH release through synergistic receptor activation.
When should I inject CJC-1295 no DAC?
Before bed (PM) on an empty stomach. This amplifies the natural nocturnal GH surge. Wait at least 20-30 minutes after your last meal.
How long does a CJC-1295 no DAC cycle last?
8 weeks on, 8 weeks off, with a 5-on/2-off weekly pattern. Monitor IGF-1 to confirm response.
What results can I expect?
Improved sleep quality (1-2 weeks), gradual fat loss (4-8 weeks), improved recovery, better skin quality, and modest body composition improvements. Effects are subtle and cumulative.
References
| Citation |
Topic |
PMID |
| Teichman et al., J Clin Endocrinol Metab (2006) |
CJC-1295 pharmacokinetics, GH/IGF-1 stimulation in humans |
16352683 |
| Ionescu & Bhatt, J Clin Endocrinol Metab (2006) |
Pulsatile GH secretion preserved during CJC-1295 stimulation |
17018654 |
| Alba et al., J Clin Endocrinol Metab (2006) |
CJC-1295 normalizes growth in GHRH knockout mouse |
16822960 |
For educational and research purposes only. This is not medical advice. CJC-1295 without DAC has no human clinical trials. Community protocols are based on GHRH pharmacology and the DAC version's clinical data.