CJC-1295 vs Ipamorelin: the honest comparison
These do not compete — they pair. CJC-1295 is a GHRH analog; Ipamorelin is a GHRP. Running either alone works; running both together produces a stronger and more physiologic GH pulse than either alone. If forced to pick one, Ipamorelin has the cleaner side-effect profile for a first-time user.
Side-by-side facts
| CJC-1295 | Ipamorelin | |
|---|---|---|
| Class | GHRH analog (growth-hormone-releasing hormone) | Ghrelin receptor agonist / GHRP (growth-hormone-releasing peptide) |
| Half-life | No-DAC: ~30 minutes. DAC version: ~6–8 days. | Approximately 2 hours |
| Typical dose | 100 mcg, 1–3x daily (no-DAC); 1–2 mg weekly (DAC) | 100–300 mcg per injection, 1–3x daily |
| Category | Growth hormone axis | Growth hormone axis |
| FDA status | Not FDA approved. Research use only. | Not FDA approved. Research use only. |
| Storage | Lyophilized refrigerated. | Lyophilized refrigerated. |
What they have in common
Both are research peptides that raise endogenous growth-hormone release. Both are unapproved in the US. Both are widely combined with each other in GH-axis protocols for anti-aging, recovery, and body composition.
When to pick CJC-1295
Pick CJC-1295 when you want sustained baseline GHRH tone. With-DAC CJC-1295 has a half-life of days and smooths out GH pulses; without-DAC CJC-1295 (mod-GRF) acts on the same mechanism but clears much faster, producing sharper pulses.
When to pick Ipamorelin
Pick Ipamorelin when you want a short, pulsatile GH-releasing signal without cortisol or prolactin elevation. Ipamorelin is the cleanest GHRP — other GHRPs (GHRP-2, GHRP-6) raise hunger and cortisol more aggressively.
Can you stack them?
Yes — CJC-1295 + Ipamorelin is the single most-run peptide combination. GHRH plus GHRP produces synergistic GH release that exceeds either alone. See the full CJC-1295 + Ipamorelin stack guide for cadence and injection notes.
They stack → See our full CJC-1295 + Ipamorelin stack guide for cadence and side-effect notes.
The two compounds
Track either compound on iPhone
Peptide Protocol schedules doses, calculates reconstitution, and logs side effects for both — on iPhone, free to download.
See the app →Frequently asked questions
What is the main difference between CJC-1295 and Ipamorelin?
CJC-1295 is GHRH (raises the baseline signal telling pituitary to release GH); Ipamorelin is a GHRP (provides the pulse signal that triggers release). They are upstream and downstream of each other in the same axis — that is why they combine rather than compete.
Can you stack CJC-1295 and Ipamorelin?
Yes — CJC-1295 + Ipamorelin is the single most-run peptide combination. GHRH plus GHRP produces synergistic GH release that exceeds either alone. See the full CJC-1295 + Ipamorelin stack guide for cadence and injection notes.
Which is better, CJC-1295 or Ipamorelin?
These do not compete — they pair. CJC-1295 is a GHRH analog; Ipamorelin is a GHRP. Running either alone works; running both together produces a stronger and more physiologic GH pulse than either alone. If forced to pick one, Ipamorelin has the cleaner side-effect profile for a first-time user.
When should I pick CJC-1295?
Pick CJC-1295 when you want sustained baseline GHRH tone. With-DAC CJC-1295 has a half-life of days and smooths out GH pulses; without-DAC CJC-1295 (mod-GRF) acts on the same mechanism but clears much faster, producing sharper pulses.
When should I pick Ipamorelin?
Pick Ipamorelin when you want a short, pulsatile GH-releasing signal without cortisol or prolactin elevation. Ipamorelin is the cleanest GHRP — other GHRPs (GHRP-2, GHRP-6) raise hunger and cortisol more aggressively.
Are CJC-1295 and Ipamorelin FDA approved?
CJC-1295: Not FDA approved. Research use only. — Ipamorelin: Not FDA approved. Research use only.
Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.