I take liquid Sertraline, liquid Abilify and Klonopin for anxiety and depression. I drink a decent amount of soda, too. The caffeine in the soda affects me more than I originally thought that it would affect me. I am addicted to caffeine, however, like I said, I am really sensitive to it and I think that it's screwing up my medication; it's definitely screwing up how I feel. I drink more caffeine during the work week and I feel like shit, just about. I feel tired, mentally cloudy, anxious, a little paranoid and overall, kind of loopy. Trainspotter explained to me that, basically, caffeine and it's make-up work against the medications I take and cause bad side effects from the medication and bad side effects from the caffeine. I would be interested in hearing what people have to say about caffeine and medications and why this stuff happens. Thanks. By the way, Trainspotter told me that I should taper off caffeine and not drink soda anymore because of the bad combination. I think that he's right, but I'm addicted to the caffeine - it's like a circle - argh!!!