What abbreviation is used for the term "by mouth"?

The abbreviation used for the term "by mouth" is "p.o." or "PO," which stands for the Latin term "per os." This is a standard abbreviation in the medical field indicating that a medication or treatment should be administered orally. It is crucial for ensuring clear communication among healthcare providers, particularly when it comes to medication administration routes.

In medical documentation and prescriptions, it is essential to specify the route of administration to avoid any confusion regarding how a patient should take their medication. Using "p.o." signifies that the medication is intended to be swallowed, which is a common route for many medications. Awareness of such abbreviations enhances medication safety and prevents errors in patient care. The other options represent different medical terms and routes; for example, "NPO" indicates that a patient should not take anything by mouth, which contrasts with the intention of administering medications orally.