Peptide vs Peptide
CJC-1295 vs Ipamorelin: Growth Hormone Stack Comparison
CJC-1295 and Ipamorelin are usually stacked, not chosen against each other. CJC-1295 (GHRH analog) raises baseline GH; Ipamorelin (selective ghrelin agonist) drives pulsatile release without affecting cortisol or prolactin. Read the full breakdown below — including dosing protocols, vendor purity comparison, and the case for ipamorelin alone.
Best overall
CJC-1295 + Ipamorelin (combined)
These two are typically stacked rather than compared — CJC-1295 (GHRH analog) provides the steady GH baseline and Ipamorelin (ghrelin mimetic) drives pulsatile release.
Best value
Ipamorelin alone
Lower per-mg cost, no DAC variant required, simpler reconstitution.
Best quality
CJC-1295 with DAC
Longer half-life (≈8 days) means fewer injections, but also harder to titrate.
Mechanism
CJC-1295 is a synthetic analog of growth hormone releasing hormone (GHRH). Ipamorelin is a pentapeptide that selectively binds the ghrelin (GHSR) receptor.
Stacked together, they hit two GH-axis switches at once: CJC-1295 lifts the baseline GH set-point, while ipamorelin triggers pulsatile bursts. The result is more physiologic than either alone.
When to choose ipamorelin alone
If you want lower cost, simpler reconstitution, and don't need the elevated GH baseline, ipamorelin monotherapy is reasonable. Many users start here.
When to add CJC-1295 (with or without DAC)
- CJC-1295 (no DAC): half-life ~30 minutes. Daily dosing required.
- CJC-1295 with DAC: half-life ~8 days. Weekly dosing — easier compliance but harder to titrate down if side effects appear.
Vendor quality
Both peptides are widely sold but purity varies. See the per-vendor lab data for CJC-1295 vendors and Ipamorelin vendors.
Methodology
This comparison reflects published research and aggregated COA data — see our methodology for how we score vendors.