Ambesol is an over-the-counter topical analgesic used primarily to relieve pain associated with teething in infants and other oral discomforts, such as canker sores and minor mouth irritations. It typically contains ingredients like benzocaine, which numbs the area, providing temporary relief from pain. Ambesol is available in various forms, including gels and liquids, and is intended for short-term use. Always follow the instructions on the label or consult a healthcare professional for proper use.