I have never used Frag. From what I understand, it is the fat burning portion of GH. I don't know how well it works. And you have to remember, GH isn't really the best option to begin with, when fat loss is the main goal. Yes it will help, and yes, actual GH does a lot of other things that are great, but if fat loss is the main goal, I would look at other options before looking at Frag. Clen and for those more advanced, t3 will both burn some serious fat. Clen can be used off cycle too, without as much risk of muscle loss. It's probably cheaper than Frag as well. 

For someone that wants to get really lean and is doing everything else right...eating the perfect diet for their body, doing the right amount of cardio to supplement their diet plan, plus taking clen or another fat burner, then GH may push fat loss just that much further. At this point, it might be a good time to experiment with Frag and see if it adds more to the work you are putting in. If I were to run it, I would still use actual GH as well. I run actual GH and as I mentioned, add other peps on top of that.