Question

All of the following drug groups produce analgesia except:

A. barbiturates.
B. alpha-2 agonists.
C. phenothiazines.
D. opioids.

Answer 1

The correct answer is D. opioids. Opioids, such as heroin, morphine, methadone, and codeine, are a category of drugs that produce analgesia, which means they decrease pain.

Step-by-step explanation:

The correct answer is D. opioids. Opioids, such as heroin, morphine, methadone, and codeine, are a category of drugs that produce analgesia, which means they decrease pain. Therefore, opioids do produce analgesia. On the other hand, barbiturates, alpha-2 agonists, phenothiazines, and other drug groups may have different effects or mechanisms of action, but they do not primarily produce analgesia.