What does the abbreviation P.O. indicate in medication administration?

The abbreviation P.O. stands for "per os," which is a Latin term meaning "by mouth." This indicates that the medication is administered orally, allowing it to be swallowed and absorbed through the digestive system. When a medication is prescribed to be taken P.O., it is understood that the patient should ingest the medication in a form that can be effectively absorbed in the gastrointestinal tract.

Other methods of administration, such as intravenously, subcutaneously, or topically, involve different routes and techniques for delivering medication that do not include oral ingestion, which further emphasizes the specificity of P.O. in indicating oral administration. Understanding these distinctions is crucial for proper medication administration and ensuring that patients receive their medications in the intended manner.