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CJC-1295 vs Ipamorelin
GHRH vs GHRP — and why the best protocol combines both for synergistic growth hormone release
CJC-1295
Growth Hormone Releasing Hormone
VS
Ipamorelin
Growth Hormone Releasing Peptide
| Factor | CJC-1295 | Ipamorelin |
|---|
| Class |
GHRH analog (no DAC version) |
GHRP-3 / Ghrelin mimetic |
| Receptor Target |
GHRH receptors on pituitary |
Ghrelin/GHS-R receptors on pituitary |
| Mechanism |
Amplifies GH pulse amplitude |
Triggers GH release + suppresses somatostatin |
| Half-Life |
~30 minutes (no DAC) |
~2 hours |
| Typical Dose |
100–200 mcg per injection |
100–300 mcg per injection |
| Cortisol Elevation |
None significant |
None significant (key advantage vs GHRP-2/6) |
| Hunger Stimulation |
None |
Minimal (advantage over GHRP-6) |
| Prolactin Effect |
None |
None (advantage over GHRP-2) |
| Best Time to Inject |
Fasted, before sleep |
Fasted, before sleep (same timing) |
| Used Alone? |
Yes, but weaker without GHRP |
Yes, but weaker without GHRH |
| Combined Effect |
Synergistic — 3–10× greater GH pulse than either alone |
Synergistic — activates different receptor pathway |
| Best Protocol |
100–200 mcg + Ipamorelin |
100–200 mcg + CJC-1295 |
⚖️ The Verdict
This isn't a competition — it's a pairing. CJC-1295 (no DAC) and Ipamorelin activate completely independent receptor systems (GHRH receptors vs ghrelin receptors) and produce a synergistic GH pulse 3–10× larger than either alone. Think of CJC-1295 as pressing the gas pedal and Ipamorelin as simultaneously releasing the brake (by suppressing somatostatin). The standard protocol: inject 100–200 mcg of each simultaneously, 1–3× daily, fasted. This is the most popular GH secretagogue stack in research.
⚠️ Research purposes only. Not medical advice. Consult a licensed healthcare provider.