The psychostimulant medication modafinil is included as MODALERT 200MG TABLET. Narcolepsy in adults can be treated with this. MODALERT 200MG TABLET is also prescribed for the treatment of shift work disorder, circadian rhythm sleep problem, and obstructive sleep apnea (the blocking of the airway during sleep). 

Narcolepsy is a chronic, extremely rare disorder of the brain's neural circuits that causes disruptions in the brain's normal sleep-wake cycle. Symptoms of narcolepsy include difficulty staying awake during the day, daytime sleepiness, inattention, sleep attacks, cataplexy (temporary loss of muscle control leading to weakness and falling), sleep paralysis (temporary inability to move or speak during waking up or falling asleep), nighttime awakenings, and vivid dreams.

An electrocardiogram (ECG) is a type of cardiac test that your doctor may do while you're taking MODALERT 200MG TABLET. Your blood pressure and heart rate may be checked while you take MODALERT 200 TABLET.