DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Woman taking modafinil. Close-up of a woman taking the stimulant drug modafinil. Modafinil, which is marketed as Provigil, is used to treat the daytime drowsiness symptoms of narcolepsy, and also attention-deficit/hyperactivity disorder (ADHD). It is thought to work by inhibiting the reuptake of the neurotransmitters dopamine and noradrenaline.
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