After taking provigil for a few weeks regularly, yesterday i did NOT. I spent the whole day fighting what felt like demons. I felt them mentally AND physically. Seriously, it felt like they were inside me. It was very strange, and HORRIBLE. A connection between the two doesn't seem to make sense, but I don't know what else to think. Today, so far, nothing like that - but I am wondering if i just feel better because I may have discovered the reason for it, or if it's because the provigil is out of my system. OR if the horror will still return, later today. While taking it, I did stay awake all day and felt more motivated than usual. Thank you for any information you can give me!