Just wanted to chime in and share my experience. I am running Mexy Greens for the first time as well.. I honestly have felt minimal sides. Started at 2iu/day ED for a month then bumped to 3.. now 4iu/day ed.. I have felt numb hands at night about once a week or so. I do sleep better, but other than that I haven't really felt much. You have to understand that GH isn't as noticeable as you would think. Many here on the boards will tell you that you need to run it for 6months to really see any benefits. They will also tell you to throw in some AAS and maybe slin..
I am only running GH. My diet is spot on, training is in check. Have I gained size? Yes. Have I Gained Strength? Yes. How much can I attribute to GH? I don't know. It's expensive, and it definitively wont make you double your size overnight. You have to give it time. Everyone here vouches for Mexy, and I know most of them don't know the diff between shitty and good GH, but I'm sure many do. So as everyone say, trust your source and be patient.