Which administration route involves delivering a drug into the rectum?

The administration route that involves delivering a drug into the rectum is known as the rectal route. This method allows for the drug to be absorbed through the rectal mucosa, providing a useful alternative for patients who may have difficulty swallowing pills or for those who are vomiting. Additionally, rectal administration is often utilized for local effects, such as in the treatment of hemorrhoids, or for systemic effects when quick absorption is necessary.

This route can bypass some of the digestive processes that can affect the absorption of medications, making it a valuable option in various clinical situations. Rectal medications can also provide an effective way to deliver drugs in pediatric and geriatric populations, where oral administration might pose challenges.