I just started Vyvanse today. I felt energetic when I took it, but I was also very jumpy and tense. I have a lot of anxiety, so I'm not sure if a stimulant is right for me. I did notice however that all day I had absolutely no appetite, which is good, I need to lose weight, and I did make myself eat something. One thing I found interesting on a website for Vyvanse, it said you should use caution when driving or doing anything that requires you to be alert. Uh, isn't the point of the med to make us focus better and be more alert? Well, it's only day one, maybe I need to give it more time.