first how long have you been taking this dose? If you have just started I would suggest you lower dose to 1iu/day for several days and increase your water intake, then after 1 week you can increase your dose again by 1/2 iu
/week
this give your body a chance to adjust to the higher hgh levels.
or, since you say you do not want to lower dose, then you must drink more water , a lot more water. P5P is good to counteract the carpel tunnel syndrome one gets with HGH useage