helps improve the fatigue associated with narcolepsy and other sleep disorders, including bouts of non-obstructive sleep apnea. Additionally, it is used to assito st you stay alert during the day if your job schedule prohibits you from maintaining a normal sleep routine (shift work sleep disorder). This medicine does not address sleep disorders and may not ease tiredness entirely. It is not a replacement for adequate sleep. It should not be used to alleviate fatigue or to inhibit sleep in healthy individuals. It is unknown how this hormone keeps you awake. It is believed to influence neurotransmitters in the brain.