The brain, particularly the hypothalamus, which controls sleep-wake cycles, is the primary organ affected by narcolepsy. It is frequently associated with the death of neurons that produce the wake-promoting hormone hypocretin (orexin). Abrupt sleep attacks and severe daytime tiredness are the results of this disturbance. Drugs like Modalert 200mg(modafinil) are frequently recommended to treat these symptoms. During the day, Modalert 200mg helps keep the brain active and alert. Although it doesn't treat narcolepsy, when taken as directed by a doctor, it greatly enhances everyday functioning and quality of life.