Narcolepsy causes frequent awakenings and poor sleep quality due to nighttime fragmentation. They sleep 7–9 hours per day, comparable to those without narcolepsy, despite these disturbances. Due to extreme daytime drowsiness, they may take repeated 10- to 20-minute naps. Narcolepsy patients are often administered modalert 200 mg (https://www.smartfinil.net/product/modalert-200/) (modafinil) for daytime drowsiness. It increases wakefulness and reduces daytime naps, boosting alertness. Despite increasing alertness, modafinil seldom disrupts nocturnal sleep.