Which of the following drugs is classified under Schedule III?

The classification of drugs under the Controlled Substances Act is essential for understanding their potential for abuse and medical use. Schedule III substances are those that have a moderate to low potential for physical and psychological dependence.

Barbiturates, which are indicated as the correct answer, fall under Schedule III because they can be prescribed for medical purposes, such as managing anxiety or seizures, but they also carry a risk of abuse and dependence. This classification allows for some regulation while still enabling legitimate medical use.

In contrast, Xanax, Morphine, and Fentanyl are classified under stricter schedules due to their higher potential for abuse and severe dependence. Xanax is categorized as a Schedule IV drug, Morphine is a Schedule II narcotic, and Fentanyl is also classified as Schedule II due to its potency and risk factors. Understanding these classifications helps law enforcement and medical professionals navigate the complexities of prescription drugs and their regulation.