Provigil 200 mg effectively treats extreme exhaustion that is frequently associated with narcolepsy and other sleep disorders, such as obstructive sleep apnea, which is typified by breathing disruptions during the night. Additionally, people who struggle with irregular work schedules such as those affected by shift work sleep disorder may find this medicine helpful in helping them remain awake during job-related obligations. However, it is important to recognize that even if this therapy increases wakefulness, it is not a cure for certain sleep disorders and might not totally eliminate feelings of tiredness.