What is the route of administration for medication that is inserted directly into the rectum?

The route of administration for medication that is inserted directly into the rectum is rectal administration. This method delivers medication through the rectal wall, allowing for absorption into the bloodstream. It is particularly useful for patients who may have difficulty swallowing pills or those experiencing nausea or vomiting, as it can provide a faster onset of action bypassing the gastrointestinal system. Rectal administration can be used for various medications, including laxatives, pain relievers, and anti-nausea drugs.

Other options do not apply in this context. Vaginal administration involves placing medication in the vaginal canal, oral administration refers to medications taken by mouth, and injection administration involves delivering medication via a syringe into the body, typically through a muscle or vein. Each of these routes has specific guidelines and uses that differ from rectal administration.