What does buccal administration refer to?

Buccal administration refers to the method of delivering medication between the cheek and the gum. This route allows for the medication to be absorbed directly into the bloodstream through the mucosal tissues in the mouth. This is advantageous because it can result in a faster onset of action compared to medications taken orally, as they bypass the digestive system and the first-pass metabolism in the liver.

In the context of the other options, the nasal route involves administration through the nasal passages, sublingual refers specifically to placing medication under the tongue, and injection methods involve delivering medication via a syringe or needle directly into the body, either intramuscularly, subcutaneously, or intravenously. Each of these routes has its own specific indications and methods of action that distinguish them from the buccal route.