Modalert 200 tablets are for sleep disorders, Modalert enhances wakefulness and helps people to stay active and awake in the daytime. Daytime sleepiness is a sleep disorder that makes people sleepy in the daytime. This is the time in which most people work and such an issue affects the work. Sleep disorders such as sleep apnea, shift work sleep disorders, etc. can be treated with Modalert 200 mg.