I'm doing research about Hgh and have a couple of questions. First off, im 37the years old 5'6" 170lbs. Im only looking to make small improvements. From what I read I wont know what an optimal dose will be for myself until I start using it, but I plan to run around 4iuthe a day. Does that sound about right? 2nd , would insulin and a thyroid supplement be a good idea? If so at what doses? Also how long does Hgh last in its powder form? Thanks for your input. Ps. I also have test on hand to run with it. Im trying to keep my cholesterol down though. Any thoughts?