Which of the following medications is an example of a Schedule IV drug?

Benzodiazepines are indeed classified as Schedule IV drugs under the Controlled Substances Act. This classification is based on their low potential for abuse relative to substances classified as Schedule I, II, or III drugs. While benzodiazepines can lead to physical dependence and have the potential for misuse, they are typically considered to have a lower risk compared to higher schedule drugs.

In the context of pharmacology and substance control, Schedule IV drugs include substances that are generally accepted for medical use and have a lower potential for addiction. Benzodiazepines, which are commonly prescribed for anxiety, insomnia, and muscle spasms, fall into this category due to their therapeutic benefits and relatively lower risk of serious liabilities when used appropriately.

Oxycodone and hydromorphone are classified as Schedule II drugs, indicating a higher potential for abuse and more stringent regulations concerning their prescription and availability. Pentobarbital is typically classified as a Schedule II or III drug, depending on its formulation and use. Thus, they do not fit the criteria of a Schedule IV drug.