HGH is fine to use however you need to fully understand what it does, how it works and how to obtain the benefits from it... if you are under 30, you are not declining in levels and will not see the results from it that you would over 30... 4 ius is far too much and completely unnecessary unless you have generic low quality.. you need to understand what exactly it does as well.. you have a lot more to learn about it.. from the sounds of it, you dont know much about it and are going on the mere intrigue of it