I started my first cycle of HGH (kefei) one week ago. I started at 2iu for 2 days then 4iu for 2 days and 6iu for the last 3 days. I have felt zero side effects (tingling, carpal tunnel, etc. When should i start to worry about quality? I feel i can go to 8iu but that will be the most i want to do per day. What do you guys think?