The stomach area works okay for me. The only spot that gave me a reaction was from ghk-cu, and that cleared up after about a week of daily shots.
Right now I do HGH every day and Reta once weekly, both under the skin in my stomach area. I also get a testosterone shot in the muscle once a week. I'm considering splitting Reta to twice a week and splitting the TRT dose too, but that would mean a lot more pokes. Where do most of you usually put the needles? I'm considering moving the HGH to my shoulders even though the insulin needles are only 8 mm.