Has anyone here experienced tolerance with Modafinil?
idlewords: I've noticed I can have different physiological responses to the same dose (same batch, same time of day, etc.)   I took the stuff regularly for several weeks and mostly stopped because of two side effects - false sense of urgency about everything, and waking up unusually early the day after taking a dose (I was using it for productivity, not sleep avoidance).   But I did not notice a drop-off in effectiveness.  Still seems to work the same way on the rare  occasions I take it now.