Barbiturates are typically characterized by which key feature?

Barbiturates are typically characterized by which key feature?

• A. End in -barbital or Thiopental
• B. They are analgesic
• C. They are always short-acting
• D. They do not reach the brain

Answer: (A)

Barbiturates are a class of CNS depressants whose naming often signals their identity. A clear clue is the drug name ending in -barbital (such as phenobarbital, secobarbital, amobarbital) or the individual member thiopental. This naming pattern is a handy way of recognizing the class. They are not analgesics; their primary role is sedation, hypnosis, anesthesia, and anticonvulsant activity, achieved by enhancing GABA-A receptor–mediated inhibition in the brain. They do reach the brain and exert effects there, so the statement that they do not reach the brain is incorrect. They also vary in duration of action—some are short-, intermediate-, or long-acting—so the claim that they are always short-acting isn’t accurate.

Barbiturates are a class of CNS depressants whose naming often signals their identity. A clear clue is the drug name ending in -barbital (such as phenobarbital, secobarbital, amobarbital) or the individual member thiopental. This naming pattern is a handy way of recognizing the class. They are not analgesics; their primary role is sedation, hypnosis, anesthesia, and anticonvulsant activity, achieved by enhancing GABA-A receptor–mediated inhibition in the brain. They do reach the brain and exert effects there, so the statement that they do not reach the brain is incorrect. They also vary in duration of action—some are short-, intermediate-, or long-acting—so the claim that they are always short-acting isn’t accurate.