Same same but different.
I've used both pharma hgh and pharma igf1 LR3 by prescription. Couldn't really tell a whole lot of difference, besides I held more water with GH but minimal. The GH did cost more at the end of the day but I feel as if GH has more benefits to it so I've stuck with it from then on. This may also be why igf1 is less popular not completely sure