A common side effect from GH is Carpal Tunnel Syndrome. I've experienced this myself and it can be pretty serious. There are people who don't ever get this negative effect from GH, however, I believe that is because they are ones that actually do have a need for it. You being 22, I would doubt highly that your body has a genuine need for GH. If you do try it at that dose, and you remember, please drop me a note letting me know how it goes for you. I'd be interested in hearing. Thanks.