Which of the following abbreviations indicates a route of administration where medication is placed between the gum and cheek?

The abbreviation that indicates a route of administration where medication is placed between the gum and cheek is “buccal.” This method allows for the absorption of the medication directly into the bloodstream through the mucous membranes in the mouth. By placing the medication in this location, it bypasses the digestive system, which can often reduce the time it takes for the drug to take effect and can also improve bioavailability.

In contrast, the oral route refers to medications taken by mouth that must pass through the gastrointestinal tract. The rectal route involves administering medication through the rectum, typically used when other routes are not feasible. The sublingual route involves placing medication under the tongue for quick dissolution and absorption, but it is distinct from the buccal route, as the latter specifically involves placement between the gum and the cheek. Hence, the designation of 'buccal' is the most accurate description for the given administration method.