Modafinil 200mg is a prescription medication used in the treatment of excessive daytime sleepiness in patients with narcolepsy, obstructive sleep apnea and shift-work sleep disorder. It contains the active ingredient of Armodafinil. Medical use of Modafinil 200mg approved by the FDA. Modafinil works by stimulating certain neurochemicals in the brain thus enhance brain performance and cognitive function. To learn more on Modafinil 200mg, visit here.