What is the meaning of "po" in prescription terminology?

The term "po" in prescription terminology stands for "per os," which is a Latin phrase meaning "by mouth." This indicates the route of administration for medications that are intended to be taken orally. When a prescription includes "po," it instructs that the medication should be consumed through the mouth, allowing it to be absorbed through the digestive system.

Understanding this abbreviation is crucial in pharmacology as it helps clarify how a medication should be administered to ensure proper efficacy and safety. Other terms like "at bedtime," "after meals," and "as needed" refer to different aspects of medication administration but do not convey the specific route of administration as "po" does.