What is the meaning of the abbreviation 'p.o.' in medical terms?

The abbreviation 'p.o.' in medical terminology stands for "by mouth," which is derived from the Latin phrase "per os." This term is widely used to describe the route of administration for medications, indicating that a drug should be taken orally. When a medication is prescribed to be taken p.o., it means that the patient should swallow it, allowing the drug to be absorbed through the digestive system.

Understanding this abbreviation is crucial for medication administration, as it provides clear instructions on how to take the medication. Ensuring that patients know they need to take medications by mouth can help improve adherence to treatment plans and reduce confusion regarding how to properly consume their prescribed medications.