riptropin seemed ok, it's only one of two that I've tried. Problem is I ran it only at 3 iu's, not long enough either, then screwed up later by throwing my money on peptides and doing the 1iu, 15mins after the peptides routine, twice a day, therefore only running 2 iu's. However, at first, I did feel the ache in the delts, felt as if they were wanting to expand, very minor hand numbness. This is my contribution, should be disregarded lol.