Hi there. I was wondering if anyone who is predisposed to hypomanic or manic states (i.e. but not necessarily limited to persons afflicted with bipolar disorder) could shed some light onto the effect that modafinil has on the occurrence and/or character of these states. I know that caffeine, as well as some adrenergic stimulants like amphetamine, are able to induce and prolong manic states in those who are predisposed to them. Some other factors like sleep deprivation can also effect their occurrence, which makes me wonder if modafinil can play into any of this at all.