Many of the nootropics and stacks discussed here have stimulating or stimulant-like effects that people often seem to develop tolerance to. I am referring in particular to caffeine, modafinil and the CILTEP stack.
Caffeine, for instance, makes me very alert and productive for the first week or so that I use it, but the effects quickly diminish with chronic use. Also, the subjectively strong effects from the CILTEP stack seemed to diminish over days and resulted in very marked fatigue after a week or so. Reading through the forum, it seems that these experiences are very common.
So, does anyone have any experience or ideas on how this tolerance can be prevented and/or reversed? Recommendations on how to cycle would also be appreciated..