Question 38

Butorphanol is a controlled substance.

Butorphanol is classified as a controlled substance due to its potential for abuse and dependence, particularly in its use for pain management.

A) Metoprolol

Metoprolol is not a controlled substance; it is a beta-blocker commonly prescribed for hypertension and heart-related conditions. It does not have the same potential for abuse or dependence associated with controlled substances.

B) Butorphanol

Butorphanol is indeed a controlled substance, specifically categorized as a Schedule IV drug. It is used for pain relief but carries a risk of addiction and misuse, which necessitates regulation.

C) Carvedilol

Carvedilol is another beta-blocker used to treat heart failure and hypertension, similar to metoprolol. It is not classified as a controlled substance due to its minimal potential for abuse.

D) Propranolol

Propranolol is also a beta-blocker that is used for various cardiovascular issues, including anxiety and migraine prevention. Like metoprolol and carvedilol, it is not a controlled substance and does not pose significant abuse risks.

Conclusion

Butorphanol is the only option that is a controlled substance because of its potential for abuse and the regulatory measures in place to manage its distribution and use. In contrast, the other options—metoprolol, carvedilol, and propranolol—are not classified as controlled substances due to their low potential for dependency and are primarily used for legitimate medical purposes.