Armodafinil, sold under the brand name Waklert among others, is a medication used to improve wakefulness and reduce excessive daytime sleepiness. It is a derivative of modafinil and is often prescribed to treat conditions such as narcolepsy, shift work sleep disorder, and obstructive sleep apnea. Armodafinil works by affecting certain chemicals in the brain that regulate wakefulness. It is known as a eugeroic, which means it promotes alertness without the jitteriness or anxiety associated with some other stimulants.
