A sedative is a depressant drug that slows down CNS activity, respiration, blood pressure, and temperature.
A depressant drug that depresses the CNS, respiration, blood pressure, and temperature is known as a sedative. Sedatives such as barbiturates and benzodiazepines slow down brain function, promoting relaxation and drowsiness. These drugs act by enhancing the inhibitory neurotransmitter GABA, which calms CNS activity.
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