Which class of drugs decreases CNS activity and induces relaxation?

Which class of drugs decreases CNS activity and induces relaxation?

• A. Depressants
• B. Hallucinogens
• C. Stimulants
• D. Opioids

Answer: (A)

Drugs that decrease brain activity and promote calmness are CNS depressants. Their main effect comes from dampening neural signaling, often by enhancing inhibitory neurotransmission (such as via GABA receptors). This leads to relaxation, reduced anxiety, and often sleepiness, with sedation increasing as dose rises. Among the options, this class best matches the described effect of calming the nervous system. Hallucinogens alter perception and cognition rather than simply calming the CNS; stimulants boost alertness and activity; opioids depress the CNS as well, but the label that captures the broad relaxing, sedative effect is depressants.

Drugs that decrease brain activity and promote calmness are CNS depressants. Their main effect comes from dampening neural signaling, often by enhancing inhibitory neurotransmission (such as via GABA receptors). This leads to relaxation, reduced anxiety, and often sleepiness, with sedation increasing as dose rises. Among the options, this class best matches the described effect of calming the nervous system. Hallucinogens alter perception and cognition rather than simply calming the CNS; stimulants boost alertness and activity; opioids depress the CNS as well, but the label that captures the broad relaxing, sedative effect is depressants.