Modafinil is a wakefulness-promoting agent commonly used to treat sleep disorders such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder. It is known for its ability to improve alertness and reduce excessive sleepiness. It Used alongside other treatments to manage excessive sleepiness. Modafinil Helps control excessive daytime sleepiness. It Helps individuals who work non-traditional hours stay awake during their shifts.