You need to to use the sermorelin with a GHRP, alone it really doesn't do too much.
Here is a thread I wrote here a while back that may clear up a few questions for you, as fasting correctly is the biggest part of getting the most out of them.
I need to update this thread, but most of the info is still good.
http://forums.steroid.com/showthread....#.UJFon7QqafQ
I will add that those nearing 50 or over need to consider rhGH, if the machinery is broken up there, you can not get stimulation with the peptides.