Modalert 200 usually starts to function 30 to 60 minutes after consumption. The pill normally reaches its peak potency two to four hours after being taken. In particular, it assists those with sleep disorders like narcolepsy or shift work sleep disorder by encouraging wakefulness, increasing alertness, and improving attention. Depending on a person's metabolism, diet, and general health, effects might differ. As prescribed by a physician, it should be taken in the morning or an hour before a shift for optimal effects.