Well been using these peptides for about 2 months now and can really tell a difference with them, not only do they help burn fat but think they help add muscle for sure. Also noticed that running them with GH makes a huge difference than just taking GH by itself. Don't know how effective they would be without synthetic gh but I guess it does not matter. Anyways really like mod gfr-1 and ghrp-2, doing 100mcg of both 3-4 times a day. Anyone else have luck with them?