Why Does Everyone Stack Ipamorelin + CJC1295?

6 Jul 2026 · 1 min

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1:04

In this explanatory segment, the presenter answers why users commonly stack the peptides ipamorelin and CJC‑1295. He outlines that the body has two distinct growth‑hormone (GH) release systems: one driven by growth‑hormone‑releasing‑hormone (GHRH) and another driven by ghrelin. CJC‑1295 activates the GHRH pathway, while ipamorelin activates the ghrelin pathway. Although each peptide alone raises GH levels, simultaneous activation of both pathways produces a GH pulse far larger than the sum of the individual effects, explaining the popularity of the stack.

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Now let's answer the question that everybody eventually asks. If ipamorelin works, why does everyone stack it with CJC-1295? Well, the answer is actually pretty cool, and it's because these peptides are not doing the same thing. Remember earlier when I told you that your body has 2 completely different systems for releasing growth hormone? One system uses growth hormone releasing hormone, and the other system uses ghrelin. CJC-1295 works through the growth hormone releasing hormone pathway, and ipamorelin works through the ghrelin pathway. Different hormones, different receptors and different signaling pathways, but you get the same end goal. When researchers studied these pathways together, they noticed something fascinating. Individually, both types of peptides do increase growth hormone release, but when they put both in a system at the same time, the resulting growth hormone pulse becomes dramatically larger than either one can do by itself. See, it wasn't a 1+ 1= 2 situation. It was closer to 1+ 1= Bye.