Modalert 200 tablets help people with narcolepsy and other sleep disorders, including sleep paralysis, feel less exhausted (obstructive sleep apnea). If your work schedule prevents you from getting a regular night's sleep, it can also be used to keep you attentive during the day (shift work sleep disorder). This medication will not cure your sleep problems and may not fully alleviate your weariness. Modalert isn't a replacement for getting enough sleep. It should not be used to cure exhaustion or to keep people from sleeping if they don't have a sleep issue. The modalert mechanism for keeping you awake is uncertain. It is thought to work by affecting brain chemicals that control the sleep-wake cycle. Visit genericmedsaustralia.com.