Modvigil 200 is a generic version of modafinil, a wakefulness-promoting drug that is mainly used to treat narcolepsy and other sleep disorders. In an individual who is healthy and does not suffer from a sleep issue, Modvigil 200 can improve cognitive function, alertness, and attention. Students and professionals like it since it may help them feel less tired and be more productive. But using Modvigil 200 without a prescription might have negative consequences, including headaches, anxiety, sleeplessness, or an accelerated heartbeat.