This medication should be taken at a set time each day to achieve maximum efficacy. To prevent excessive daytime sleepiness, take the medication in the morning or an hour before work. Narcolepsy is a chronic disorder that produces hallucinations, severe daytime sleepiness, and other symptoms. It can also impair memory and cause weakness. Even when they had enough time to rest the night before, narcoleptics frequently feel powerless to manage their tiredness. They may nod off while engaging in passive pursuits like watching television or going to meetings. Additionally, they might develop cataplexy, a sudden decrease of muscle tone. Strong emotions like laughing or rage are frequently what start these episodes.