Which drug is NOT an example of a Schedule III drug?

Hydromorphone is not classified as a Schedule III drug; it is considered a Schedule II controlled substance. Schedule II drugs have a high potential for abuse and have specific regulations regarding their prescription and distribution. Hydromorphone, known for its potency as a pain reliever, falls into this category due to its strong effects and the potential risks of addiction and dependence.

In contrast, the other drugs listed—Vicodin, Tramadol, and Tylenol with Codeine—are categorized as Schedule III substances. Schedule III drugs have a lower potential for abuse compared to Schedule II drugs and are still permissible for medical use with some regulations. This categorization reflects the different levels of risk associated with each substance and guides clinicians in their prescribing practices, ensuring that medications are used safely and effectively.