Narcolepsy and other sleep problems, such as pauses in breathing during sleep (obstructive sleep apnea), receive a boost of energy from Armodafinil. You may use this drug to stay alert during work hours if your work schedule prevents you from getting a normal sleep routine (shift work sleep disorder). It is also used to prevent extreme sleepiness due to narcolepsy or other sleep problems. (It may help you sleep during a shift work sleep disorder.) This medicine does not cure these sleep issues and may not entirely eliminate your sleepiness. It may not be used to treat fatigue or forestall sleep in individuals who do not suffer from sleep disorders. Armodafinil is believed to stimulate certain brain chemicals that control the sleep/awake cycle to keep you awake.