Are lemons good for anxiety?

I have derealization anxiety and am on medicine for it and suffered a non stop panic/derealization attack last late june 2010-through the end of july and was put on three types of medicine for it and they've worked fine until yesterday (or maybe they're still working and it's all in my head since it's been a year since the attack and i keep thinking about it). I take Klonopin,Metoprolol,and Citalopram and have had no problems with it other than the Klonopin makes me sleepy. I read an article a few months ago about all the ways that lemons are good for you and I think one of the ways was that it helps with anxiety, but I don't remember. I was just wondering if anyone knows about this and/or knows of any foods that are good for anxiety. Thanks!