Monster makes me hyper then sick?

Okay, so yesterday my sister let me have a sip of her Monster because I had never had any. After I merely SIPPED it I was bouncing off the walls and after that wore off, I was sick to my stomach. I was just reading stuff on here about how stimulants HELP people with ADD and that confused me since it didn't help me focus, it only made me more hyper. Anyone now anything about this? I have diagnosed ADD and I'm pretty energetic on my own, but I have friends who are already hyper and drink the stuff, so is it because of the ADD?