Just my 2c anecdote: I started using 100mg/day modafinil for the first time about a month ago (week days only). I felt no clear discernible cognitive enhancem

Just my 2c anecdote: I started using 100mg/day modafinil for the first time about a month ago (week days only). I felt no clear discernible cognitive enhancement that is often said about modafinil use. What I did however notice is that it does a good job keeping me awake to handle one more day in a sleep-deprived state ... only to crash with a god awful hangover a day later. (Severe headaches, dizziness and loss of physical strength). Modafinil masks your exhaustion artificially. I'm down now to 50 mg (broken pill) for days I feel I need "a starter". This seems to be an optimal dose for me right now but I am certain I won't be using it long term or in larger doses.