Modvigil-200mg is the brand name of nootropic Modafinil. It is use to treat excessive daytime sleepiness. Modvigil-200mg can be very useful for daytime sleepiness due to Narcolepsy, Obstructive sleep apnea, and Shift work sleep disorders. Modvigil-200mg is a FDA approved medicine. It is a very less chance side effect free drug, though users should take Modvigil-200mg dosage after consulting a doctor. To know more about Modvigil-200mg visit here.