I agree, it's different from person to person...........my training partner seems to get it off of as low as 4iu daily, and i didn't notice it much off of up to 9iu/day, i would feel it a little at night, but not as bad as some guys seem to get it!
just cause you don't feel it doesn't mean the GH isn't doing it's job, that would be like saying that because you don't get acne your test isn't good!! it's just the opposite, your lucky cause you don't get sides as bad..........