Hi, I am 41 year old man. I train 5 days per week, run approx 30 to 40 km per week and weights 4 x. I recently put on a little weight so decided to try growth hormone. After a low level (2 iu) intake and short period of administration (2 week) I started to feel sick, dizzy, depressed, cold, sluggish etc. others taking the exact same batch had none of these symptoms in fact rather the opposite. These symptoms increased the more I administered. I subsequently stopped further intake and returned to my normal self being over the following 10 days. A couple of months later I decided to try a course of stanazol which I have used numerous times over my youth without any problems but to my concern, I again began to incur very similar symptoms to the growth horme. I seemed highly intolerant to low dosage (10 mg) oral. Again many other uses found no such issues. Could you please advise on what the possible underlying problem/problems could be. I have undertaken my own review, could this be a thyroid issue?