Modalert 200mg is a medication containing the active ingredient modafinil. It is a type of nootropic drug, also known as a "smart drug," that is used to promote wakefulness and enhance cognitive function. Modalert 200 is commonly prescribed to treat conditions such as narcolepsy, sleep apnea, and shift work sleep disorder. It works by affecting certain neurotransmitters in the brain, leading to increased alertness and improved cognitive performance.