Modvigil 200 mg is a clinically proven wakefulness-promoting agent that is used to treat excessive sleepiness in people caused by various sleep disorders such as insomnia, shift-work sleep disorder and obstructive sleep apnea. It is a non-amphetamine central nervous system stimulant that is works by affecting certain neurotransmitter in the brain. Medical use of this drug was approved by the FDA. FDA-approved means that the medication has been reviewed by the FDA and found to be safe and effective for a specific use based on data from clinical trials. For more details about Modvigil 200, visit Health Matter