Well LakeMountD has made some interesting posts regarding GH and IGF. The benefits of running the two together is that you would be able to take less igf than normally. Search around for it, as well as doing some other research on here. I am currently running igf and IBE's GH fragment right now. Im only 13 days in and there has been some significant water weight, so its hard to tell if its doing anything as of yet.