Modalert is a prescription medication that is used to treat excessive daytime sleepiness associated with various sleep disorders like Insomnia, Epilepsy, Narcolepsy, shift work sleep disorder, Obstructive Sleep Apnea etc. It is a eugeroic category drug. Eugeroic drugs are primarily know for it's wake promoting prosperities. The active component of Modalert works by affecting certain nerurotreansmitter in the brain and the result of affecting those neurotransmitter enhance the capacity of brain.