CJC-1295 and ipamorelin are commonly used together because they have complementary time-release characteristics:https://www.giantrawsource.com/peptides/peptides-powder-cjc1295-with-dac.html
CJC-1295 is effectively GHRH that has been modified to have a longer half-life, so it stimulates pituitary growth hormone secretion in a sustained manner over an extended period.
Ipamorelin acts on the pituitary gland directly, inducing a more immediate dump of growth hormone into circulation.
Hence, using the two peptides in combination allows you to take advantage of growth hormone in terms of both availability and intensity - the tortoise and the hare as relay partners.
