Narcolepsy a disorder marked by extreme daytime drowsiness and unexpected sleep bouts, can be effectively treated with modalert 200 (modafinil). Modalert 200 enhances alertness, focus, and energy levels all day long by encouraging wakefulness. It regulates the sleep-wake cycle by affecting neurotransmitters in the brain. Although narcolepsy is the main reason Modalert 200 is given, it can also be used to treat shift work sleep disorder and daytime drowsiness associated with sleep apnea. To prevent negative consequences or abuse, Modalert 200 should only be used under a doctor’s supervision. For an accurate diagnosis and course of treatment, always seek medical advice before self-medicating.