Extreme caution advised with Adrafinil. What I say here relates to an experience with Modafinil but as the prodrug Adrafinil is even more likely to trigger untoward effects if you take even just a little too much. It will keep you up for days on a nasty dry racing high that is not only highly unpleasant but seemingly impervious to benzos even one as potent as temazepam. Also watch your heart seemingly escape from your brain's control with wild and sudden variations in heart rate. In the end I had to call an ambulance and fortunately ER staff were familiar with Adrafinil/Modafinil OD so quickly administered powerful IV downers that knocked me right out for several hours. When I came to my body appeared to have returned to normal at last. Anyway just be very careful around this drug.