Which of the following is NOT a common ear analgesic?

Ibuprofen is classified as a nonsteroidal anti-inflammatory drug (NSAID) and is primarily used for pain relief and to reduce inflammation throughout the body. While it can help alleviate pain associated with various conditions, including some types of ear pain, it is not specifically designed or commonly marketed as an ear analgesic.

In contrast, sweet oil (often used for its soothing properties), glycerin (which can provide moisture and relief), and benzocaine (a topical anesthetic frequently applied to relieve localized pain) are all substances more directly associated with treating ear discomfort. Given this context, ibuprofen does not fit within the typical classification of common ear analgesics, which makes it the correct answer to the question posed.