CJC-1295 vs Ipamorelin vs GHRP-2 — GH Secretagogue Comparison
QSC Research Guide
CJC-1295 vs Ipamorelin vs GHRP-2 — GH Secretagogue Comparison
GH secretagogues split into two mechanistic classes: GHRH analogues (CJC-1295 — stimulates GHRH receptors to amplify GH pulse) and GHRPs (Ipamorelin, GHRP-2 — stimulate GHSR-1a ghrelin receptors to trigger GH release). Combining one from each class produces synergistic GH output.
Side-by-Side Comparison
Attribute
CJC-1295 (No DAC)
Ipamorelin
GHRP-2
Mechanism class
GHRH analogue (DPP-IV resistant)
Selective GHSR-1a agonist
GHSR-1a agonist (non-selective)
Receptor targets
GHRH receptor (pituitary)
GHSR-1a (ghrelin receptor)
GHSR-1a + moderate cortisol/prolactin
Half-life
~30 minutes
~2 hours
~1 hour
Key advantage
Amplifies pulsatile GH output via GHRH-R while maintaining natural pulsatility; DPP-IV resistance extends action vs. native GHRH
Most selective GHSR-1a agonist — minimal cortisol, prolactin, or ACTH elevation. Cleanest GH pulse of the GHRP class
Strong GH pulse with moderate cortisol elevation; co-activation of appetite pathways; longer track record in human research than Ipamorelin
Best for research
GH pulse amplification, GHRH pathway, pulsatile GH research with GHSR co-agonism (CJC+Ipa blend)
The key differentiator between Ipamorelin and GHRP-2 is selectivity: Ipamorelin produces a clean GH pulse without cortisol/prolactin; GHRP-2 produces stronger GH release with moderate cortisol co-secretion. CJC-1295 (GHRH class) and either GHRP synergise — the CJC-1295 + Ipamorelin blend is the most popular combined GH secretagogue stack in research.
Frequently Asked Questions
What is the difference between CJC-1295 and Ipamorelin?
CJC-1295 is a GHRH analogue acting on GHRH receptors to amplify GH pulse amplitude. Ipamorelin is a GHSR-1a agonist acting on ghrelin receptors to trigger GH release. They work at different receptor targets and are synergistic when combined — the basis of the CJC-1295 + Ipamorelin blend.
Why is Ipamorelin preferred over GHRP-2?
Ipamorelin produces a cleaner GH pulse with minimal cortisol, prolactin, or ACTH co-secretion. GHRP-2 produces stronger absolute GH release but with moderate cortisol and appetite stimulation. For research where cortisol elevation confounds results, Ipamorelin is the preferred choice.
What is the CJC-1295 + Ipamorelin blend?
The CJC-1295 + Ipamorelin blend combines both compounds in a pre-blended single vial at standardised ratio. It leverages the GHRH-R amplification (CJC-1295) and GHSR-1a triggering (Ipamorelin) synergy for maximum GH pulse output with clean selective receptor activation. QSC offers this as a ready-to-reconstitute blended kit.
Research Use Only: All QSC compounds are sold strictly for laboratory research purposes only. Not for human consumption, veterinary use, or any other application. Researchers are responsible for compliance with local regulations.
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