Which of the following is NOT a type of topical medication?

Syrups are not a type of topical medication; they are classified as oral medications. Topical medications are those applied directly to the skin or mucous membranes for local effects, and they include forms such as ointments, gels, and foams, which are specifically designed for external application. Ointments, for instance, are semisolid preparations intended for application to the skin, often used to deliver medications or provide moisture. Gels are typically water-based preparations that offer a cooling and soothing effect while delivering medications effectively on the skin. Foams can also be used for topical medications, providing an easy-to-apply formulation that can spread over large areas of skin. Therefore, the correct answer highlights that syrups, which are usually liquid and ingested, do not fall into the category of topical medications.