CJC-1295 + Ipamorelin Stack: The Complete Protocol Guide
Medically reviewed by Medical Advisory Board Last reviewed 2026-05-13
Why this is the most popular GH peptide combination — and exactly how to run it
CJC-1295 + ipamorelin is the most widely prescribed growth hormone peptide stack in functional medicine. CJC-1295 (a GHRH analog) and ipamorelin (a GHRP) work on complementary pathways to produce significantly more GH than either alone — without raising cortisol or prolactin. This guide covers the mechanism, dosing protocol, expected results, and who benefits most.
If you've researched growth hormone peptides, you've almost certainly come across this combination. More functional medicine physicians prescribe CJC-1295 + ipamorelin than any other peptide stack, and for good reason. Each peptide targets a different receptor system involved in regulating GH release, and together they produce substantially greater GH output than either compound does alone.
With 14,800 monthly searches, "cjc 1295 ipamorelin" is the highest-volume, low-competition search in the GH peptide space (KD=9). People searching for it have done enough research to know they want the combination, but they still need clarity on protocol, dosing, and what to expect.
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Growth hormone release is regulated by two competing signal pathways:
- GHRH (growth hormone-releasing hormone): Produced in the hypothalamus, stimulates the pituitary to release GH. CJC-1295 is a synthetic GHRH analog — it mimics this signal.
- Ghrelin / GHS-R pathway: A separate receptor system that also stimulates GH release and synergizes with GHRH. Ipamorelin activates this pathway.
When you activate both pathways simultaneously, the pituitary's GH output is amplified significantly — studies show the combination produces 2–5x more GH than either peptide alone. This is not additive; it's synergistic, because the two pathways potentiate each other at the pituitary level.
Ipamorelin is selected specifically because it's the cleanest GHRP: unlike GHRP-2 and GHRP-6, ipamorelin doesn't significantly raise cortisol or prolactin, which would counteract some of GH's benefits. The result is selective GH stimulation with a physiologically normal pulsatile pattern.
Dosing Protocol
| Component | Dose | Timing | Frequency |
|---|---|---|---|
| Ipamorelin | 200–300 mcg | At bedtime (fasted) | Once daily |
| CJC-1295 (no DAC) | 100–200 mcg | Same injection, same time | Once daily |
| CJC-1295 (with DAC) | 1–2 mg | Any time | Once or twice weekly |
Which CJC-1295 form to use:
- No DAC (most common): Short-acting, mimics natural GHRH pulsatility. Peaks and clears within 30 minutes — keeps GH release in a physiological pattern. Best for general anti-aging, sleep, and body composition.
- With DAC: The Drug Affinity Complex extends half-life to 6–8 days, producing sustained GH elevation rather than pulsatile spikes. Better for maximizing IGF-1 and lean mass gains; less physiological. Used less frequently because of the blunted pulsatility.
Bedtime dosing rationale: GH is predominantly released during slow-wave sleep (SWS). Timing the peptide injection to coincide with sleep onset amplifies the natural nocturnal GH pulse rather than creating an out-of-pattern spike. Fast 2–3 hours before injection — food (especially carbohydrates) raises insulin, which suppresses GH release and blunts the peptide's effect.
What to Expect: Results Timeline
| Timeframe | What Most Users Notice |
|---|---|
| Week 1–2 | Improved sleep quality — deeper, more restful sleep is often the first noticeable effect. Some report vivid dreams. |
| Week 3–6 | Recovery improvement — reduced soreness after training, faster healing from minor injuries. Subtle improvement in skin quality for some. |
| Week 6–12 | Body composition shifts — gradual reduction in body fat (especially visceral), modest increase in lean mass. IGF-1 measurably elevated. |
| Month 3–6 | Most pronounced body composition changes. Improved joint comfort. Some report improved mood, libido, and energy — consistent with GH/IGF-1 optimization. |
Results are gradual and physiological — this is not like anabolic steroids or exogenous HGH. The stack works by optimizing your body's own GH axis, not overriding it. Expect incremental improvements, not dramatic transformation.
Monitoring and Cycle Structure
Lab monitoring: Check IGF-1 at baseline and at 6–8 weeks. Target: upper third of age-appropriate reference range. If IGF-1 is already high-normal, the stack may not add much benefit. Also monitor fasting glucose — GH is insulin-antagonizing, and some individuals see glucose elevation.
Cycle length: Most protocols run 3–6 months on, followed by 4–8 weeks off. The off period prevents downregulation of pituitary sensitivity to the peptides. There's no firm consensus on cycle length — some physicians run continuous protocols at lower doses; others prefer cycling.
Who benefits most: Adults over 30 experiencing age-related GH decline (somatopause), athletes and active individuals focused on recovery and body composition, and anyone with poor sleep quality as a primary concern. The stack is less useful for people who already have optimal IGF-1 levels.
Frequently Asked Questions
Should I take CJC-1295 and ipamorelin together or separately?
Together, at the same time, in the same injection. The synergistic effect comes from simultaneous activation of both GH-releasing pathways. Splitting them into different times eliminates most of the benefit. The standard protocol is a single bedtime injection combining both peptides.
What's better — CJC-1295 with DAC or without DAC?
CJC-1295 without DAC is generally preferred for most users. It preserves physiological GH pulsatility, is easier to dose precisely, and is the form used in most clinical protocols. CJC-1295 with DAC is better if you want to minimize injection frequency (twice weekly instead of daily) and prioritize maximum IGF-1 elevation over physiological GH patterns.
How long before bed should I inject CJC-1295 and ipamorelin?
15–30 minutes before sleep. Fast for 2–3 hours beforehand (no food, especially no carbohydrates). The goal is to time the GH pulse to coincide with the onset of slow-wave sleep, when natural GH release peaks. Most people simply inject as they're getting ready for bed.
Can beginners use the CJC-1295 + ipamorelin stack?
Yes — this is one of the more beginner-appropriate peptide protocols because ipamorelin is very selective (no cortisol/prolactin spike) and the side effect profile is mild. The main considerations are: correct reconstitution and subcutaneous injection technique, and sourcing from a reputable compounding pharmacy or research chemical supplier. Start at the lower end of the dose range (ipamorelin 200 mcg, CJC-1295 100 mcg) and adjust based on IGF-1 response.
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