PROVIGIL 100 MG IS THE VARIANT OF PROVIGIL. IT HELPS TO TREAT EXCESSIVE TIREDNESS CAUSED BY CERTAIN SLEEP CONDITION LIKE NARCOLEPSY, SLEEP APNEA AND SHIFT WORK SLEEP DISORDER. PROVIGIL PROMOTES WAKEFULNESS AND IS USED TO TREAT EXCESSIVE DAYTIME SLEEPINESS CAUSED BY NARCOLEPSY. PROVIGIL DOES NOT TREAT THE UNDERLYING DISORDER, IT ONLY MAKES PEOPLE FEEL MORE AWAKE.