Is the cognitive enhancement effects of modafinil, the same for people with narcolepsy and people without narcolepsy?

Good question: In people with narcolepsy, Modafinil helps prevent the excessive daytime sleepiness. Modafinil is also used for adhd as it can improve the attention span. The reason for cognitive enhancement is that it allows the brain to remain on track. If you don't have a disorder it can make you hyperfocus but it also has side effects such as insomnia and irritability and it should not be used unless needed.