Which of the following medications is NOT typically used to treat narcolepsy?

Clonazepam is not typically used to treat narcolepsy. While it can be prescribed for other conditions such as anxiety or seizure disorders due to its benzodiazepine properties, it does not directly address the core symptoms of narcolepsy, which include excessive daytime sleepiness and cataplexy.

In contrast, medications such as GHB (often used under the brand name Xyrem) are specifically indicated for treating cataplexy and daytime sleepiness associated with narcolepsy. Modafinil and armodafinil are both wakefulness-promoting agents that are utilized to improve alertness and reduce excessive daytime sleepiness in patients with narcolepsy. Thus, while clonazepam may have some use in managing specific symptoms related to narcolepsy, it lacks a primary role in the treatment of this condition.