A drug used to treat excessive drowsiness brought on by narcolepsy, obstructive sleep apnea, or shift work sleep disorder, is marketed under the name Modalert 200 mg . When it comes to treating narcolepsy sufferers' excessive daily drowsiness and sleep episodes, modafinil is generally seen to be the best option. Because it increases wakefulness without inducing rebound EDS, it is a useful therapy choice for narcolepsy. It can also be used alongside other medicines, including GHB, to relieve the symptoms of cataplexy. As modafinil affects on more specific brain regions, such as the anterior and lateral, it has been used as the preferred therapy for diurnal excessive drowsiness. Based on randomized, double-blind, placebo-controlled clinical studies, modafinil has superseded methylphenidate and amphetamine as the first-line therapy for EDS and sleep attacks. However, a direct comparison of modafinil with conventional stimulants has not been conducted.