Due to my anxiety I have taken myself off caffeine. I check labels to make sure that there is no caffeine in soda before I drink it, and I have taken myself off coffee. So far it has been difficult, but I wanted to point this list out to you. It's probably rough estimate. http://wilstar.com/caffeine.htm
If I don't get caffiene I get huge pounding headaches. And if I make it through that, I'll be in bed at 7:00.