A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.
Central nervous system (CNS) stimulants are agents that increase physical activity, mental alertness and attention span. The exact mechanism of action of these agents or receptors they may affect, is not known.
Central nervous system stimulants are used to treat attention-deficit hyperactivity disorder (ADHD) and narcolepsy.
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