Which term refers to medication that is taken through the mouth?

The term that refers to medication taken through the mouth is "orally." This route of administration is one of the most common ways to deliver medications to patients, both in human and veterinary medicine.

When medication is administered orally, it is typically in the form of tablets, capsules, liquids, or powders. The process involves swallowing the medication, which then travels to the stomach and intestines where it is absorbed into the bloodstream. This route is generally convenient, safe, and allows for easy self-administration in many cases.

In contrast, the other methods mentioned involve different routes. Rectal administration involves inserting medication into the rectum, while IV (intravenous) refers to delivering medication directly into the bloodstream via a vein. Intramuscular administration involves injecting medication into a muscle. Each of these routes has specific indications and uses based on the medication's properties and the required speed of action.