Ipamorelin is one of the most selective growth hormone (GH) secretagogues known and a potent agonist of the ghrelin/growth hormone secretagogue receptor. 
CJC-1295 also causes the release of GH, but it does so by stimulating the growth hormone releasing hormone receptor. By combing the two peptides, it may be possible to produce enhanced effects because they stimulate the growth  hormone axis via two different mechanisms. Research using both peptides is likely to show increased benefit without substantially increased side effects.
Ipamorelin is likely to raise baseline levels of GH such that CJC-1295 will be able to produce both higher peaks and higher troughs while preserving normal growth hormone pulsatile secretion. The net  effect of combing the peptides would be a higher set point for the normal ebb and flow of GH.

Peptides Canada