52. Which of the following is a Schedule IV controlled substance?

Answer: B

Explanation:

Diazepam is a Schedule IV controlled substance.

Diazepam, commonly known as Valium, is classified as a Schedule IV controlled substance due to its potential for abuse and dependence while also having accepted medical uses.

A) Hydrocodone

Hydrocodone is classified as a Schedule II controlled substance because it has a high potential for abuse and severe psychological or physical dependence. It is often prescribed for pain relief but is not considered a Schedule IV substance.

B) Diazepam

Diazepam is indeed a Schedule IV controlled substance. It is used to treat anxiety, seizures, and muscle spasms, and while it has a lower potential for abuse compared to Schedule I and II drugs, it is still regulated due to risks of dependence.

C) Oxycodone

Oxycodone is classified as a Schedule II controlled substance, indicating a high potential for abuse and addiction. This categorization reflects its use in managing severe pain, but it does not fall under Schedule IV.

D) Morphine

Morphine is classified as a Schedule II controlled substance due to its high potential for addiction and abuse. It is primarily used in medical settings for pain management but is not a Schedule IV substance.

Conclusion

Diazepam is correctly identified as a Schedule IV controlled substance due to its lower potential for abuse compared to the other options, which are classified as Schedule II substances. The other options, Hydrocodone, Oxycodone, and Morphine, are associated with higher risks of dependency and are thus placed in a more restrictive category.