Final answer:
Ibuprofen is an example of a nonopioid analgesic, which is classified as a nonsteroidal anti-inflammatory drug (NSAID) and is used to treat pain, inflammation, and fever. It is distinct from opioid medications like morphine, fentanyl, and oxycodone, which have a higher potential for abuse and dependency.
Step-by-step explanation:
The example of a nonopioid analgesic from the options provided is b) Ibuprofen. Ibuprofen is an over-the-counter medication classified as a nonsteroidal anti-inflammatory drug (NSAID), which is used to treat pain, reduce inflammation, and lower fever. Unlike the other options such as morphine, fentanyl, and oxycodone, ibuprofen does not belong to the opioid class of medications which are known for their strong pain-relieving properties and potential for abuse and dependency.
Opioids like morphine and oxycodone work by binding to opioid receptors in the brain and body to reduce the perception of pain, and they are often prescribed for moderate to severe pain. However, ibuprofen works by inhibiting enzymes called COX-1 and COX-2, which are involved in the production of prostaglandins, substances responsible for pain, inflammation, and fever. Therefore, ibuprofen is commonly available without prescription and is used for various types of pain, including mild to moderate pain.