Compared, cited
CJC-1295 vs Ipamorelin
Two growth-hormone peptides that are usually combined, not compared. CJC-1295 is a GHRH analog; ipamorelin is a ghrelin-receptor GH secretagogue. Here is how each works and why people stack them.
Last updated August 2026
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| At a glance | CJC-1295 | Ipamorelin |
|---|---|---|
| Class | GHRH analog | Ghrelin-receptor GH secretagogue (GHRP) |
| What it does | Raises how much GH the pituitary can release | Triggers the GH-release pulse, selectively |
| Half-life | With DAC: ~6-8 days; without DAC: minutes | ~2 hours (human) |
| Human data | Phase 1/2 trial (CJC-1295 with DAC) | Human PK and GH-response studies |
| Typical community dose | 0.5-2 mg/week (DAC) | 100-300 mcg per dose |
| Selectivity | Raises GH and IGF-1 baseline | GH pulse with little cortisol or prolactin rise |
They work together, not against each other
This is the rare 'versus' where the answer is usually 'both.' CJC-1295, a GHRH analog, increases the amount of growth hormone the pituitary is primed to release. Ipamorelin, a ghrelin-receptor agonist, triggers the actual release pulse and does so selectively - without the cortisol and prolactin bumps older GHRPs caused. Because one raises the reservoir and the other opens the tap, the two are synergistic, which is exactly why 'CJC-1295 + Ipamorelin' is a standard community stack rather than an either-or.
The DAC distinction matters
CJC-1295 is really two products. With DAC (a drug affinity complex) it binds albumin and lasts about a week, raising GH and IGF-1 more steadily. Without DAC - sold as Mod GRF 1-29 - it clears in minutes and is timed to match ipamorelin's short pulse. People pairing it with ipamorelin usually use the no-DAC version so the two peptides pulse together.
Evidence and safety
CJC-1295 with DAC has a published human Phase 1/2 trial; ipamorelin has human GH-response data. But the specific bodybuilding doses, schedules, and the combination itself are community-derived, and neither peptide is FDA-approved. Growth-hormone secretagogues can affect blood sugar and water retention; this is educational information, not a protocol.
Who fits which
Ipamorelin alone
People who want a clean, selective GH pulse with minimal cortisol or prolactin, often as a simpler starting point.
CJC-1295 (usually no-DAC) with ipamorelin
People who want to raise the GH reservoir and the pulse together - the standard community pairing.
CJC-1295 with DAC
People who want a steadier, longer-acting GHRH effect rather than a matched short pulse. A different goal than the classic stack.
The cited card
CJC-1295
GHRH analog
The cited card
Ipamorelin
GH secretagogue
Questions people ask
Should I use CJC-1295 or ipamorelin?
They are usually combined rather than chosen between, because they act on different parts of growth-hormone release - CJC-1295 raises how much GH is available, ipamorelin triggers the pulse. This is educational information, not medical advice.
What is the difference between CJC-1295 with DAC and without DAC?
With DAC, CJC-1295 binds albumin and lasts about a week for a steadier effect. Without DAC (Mod GRF 1-29) it clears in minutes and is timed to match a short GHRP pulse like ipamorelin's. People stacking with ipamorelin typically use the no-DAC version.
Is the CJC-1295 and ipamorelin stack proven?
Each peptide has some human data, but the combination, the doses, and the schedules used in the community are not clinically established, and neither is FDA-approved.
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