Pairs a GHRH analog with a ghrelin-mimetic GHRP, aiming to drive a stronger natural GH/IGF-1 pulse than either compound produces alone -- targeting muscle gain, fat loss, recovery, and sleep quality -- while GHRP-6 is specifically reported to add a pronounced appetite-stimulating effect useful for bulking (or, for some users, an unwanted side effect they'd rather avoid by switching to GHRP-2 or ipamorelin).
Why it matters
Both compounds prompt your body to release its own growth hormone (GH), but they flip two different switches to do it.
The published per-compound doses, timing, cycle length, the mechanism sources give for why it's combined, and the harm-reduction notes — the parts that took the most research to get right — are part of membership.