It's no surprise that Modalert is one of the most popular nootropics around the globe. It is often referred to as a "smart pill" or an "endless pill" due to the similar cognitive benefits it provides. Patients with Narcolepsy, obstructive sleep apnea, attention deficit disorder, attention deficit hyperactivity disorder, and shift work sleep disorder all benefit from taking Modalert 200 to combat their excessive daytime sleepiness. Sometimes referred to as "smarties" in informal contexts.