​Provigil is also called as modafinil tablet is a prescribed medication used in the treatment of narcolepsy, a condition in which there are irregularities in the sleep-wake cycle, Obstructive Sleep Apnea – a condition where the breathing stops for a short period or the breathing is shallow, leading to a lack of sleep at night and day time sleepiness. It improves wakefulness and helps you to remain awake and reduces the tendency to nod off during the day, thus restoring the normal sleep cycle. This tablet is also used to reduce excessive sleepiness in those who do not have a sleeping schedule due to changes in the shifts of work