Which of the following is an example of a Schedule II drug?

Oxycodone is classified as a Schedule II drug due to its potential for abuse, which may lead to severe psychological or physical dependence. Schedule II drugs are substances that have a high potential for abuse but also have accepted medical uses, typically under strict regulations. Oxycodone is commonly prescribed for the management of moderate to severe pain, but its potential for addiction and misuse has resulted in strict controls and regulations.

In contrast, the other substances listed fall into different categories. Tramadol, while it is a prescription medication for pain, is classified as a Schedule IV controlled substance, meaning it has a lower potential for abuse compared to Schedule II drugs. Codeine mixtures can be categorized differently depending on the concentration of codeine and the formulation; lower concentrations may fall into Schedule III. Ambien, which is primarily used for the treatment of sleep disorders, is classified as a Schedule IV drug as well. The distinctions in these classifications underline the varying degrees of risk associated with each substance in terms of abuse and dependence.