How long have you been taking it? I'm surprised you would get side effects at just 2 iu/dy, which really is not enough to elicit much effect, IMHO. Most everyone will experience edema (water retained-swelling) and numbness to some extent from GH plus joint pain. Those are the most common side effects. I've gone as high as 8 iu/dy and they never got too bad and always subsided. I just seemed clumsy, like I right now--I lose the sensitivity in the touch of my fingers and I seem to drop small things alot--like a vial of GH last year--on a tile floor--guess what happened to that little glass vial!!!!! I had some friends who had to stop GH because they got so much swelling that their hands looked monstrous and they couldn't really function--not sure how much they were taking.
It all depends on your body. Give it time and it will likely go away.