... caffeine? I was previously on 80mgs of Strattera. Doc switched me to 36mgs of Concerta. I just happen to be sick and prescribed a 5 day prescription of Azithromycin (Z-pac) the same day. NyQuil was taken too but just the first night. I drink coffee. Do I need to limit my caffeine on Concerta? I'm finding myself freaking out. Not sure what's causing this or if I should try to wait it out a little longer and it will get better. Suggestions?