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modafinil
Modafinil is a wakefulness-promoting agent (or ''eugeroic'') used for treatment of disorders such as narcolepsy, shift work sleep disorder, and excessive daytime sleepiness associated with obstructive sleep apnea.〔 It has also seen widespread off-label use as a purported cognition-enhancing agent. In English-speaking countries it is sold under the brand names Alertec, Modavigil, and Provigil. In the United States modafinil is classified as a schedule IV controlled substance and restricted in availability and usage, due to concerns about possible addiction potential. In most other countries it is a prescription drug but not otherwise legally restricted.
The mechanism by which modafinil acts on the brain has been difficult to determine. It acts as a blocker of a type of molecule called the dopamine transporter, a mode of action shared with stimulants such as amphetamine and methylphenidate, but its influence is relatively weak and does not easily explain the observed effects of modafinil on wakefulness and cognition.
==Uses==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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