Final answer:
Oxycodone is an example of a Schedule II drug at the federal level, used to relieve moderate to severe pain but with a high potential for abuse.
Step-by-step explanation:
An example of a Schedule II drug at the federal level is Oxycodone. Schedule II drugs are characterized by having a high potential for abuse and dependence but also have accepted medical uses in the United States. Oxycodone and hydrocodone are opioid pain relievers used to manage moderate to severe pain. These substances are tightly controlled because while they are effective in pain management, they also carry a high risk of addiction and abuse, contributing to what is known as the opioid crisis. Other drugs in the opioid class include heroin, morphine, and fentanyl, all of which are derived from or chemically related to compounds found in the opium poppy.