Pro re nata is a Latin phrase meaning "in the circumstances" or "as the circumstance arises". In medical terminology, it is often abbreviated PRN or P.R.N. and refers to the administration of prescribed medication as the situation calls for it.

What does PRN mean in the medical field?

INTRODUCTION. The PRN prescription stands for 'pro re nata,' which means that the administration of medication is not scheduled. Instead, the prescription is taken as needed.

What is a PRN position?

PRN is an acronym for the Latin term “pro re nata,” which means “as the situation demands,” or simply, “as needed.” PRN nurses are fully licensed professionals who want to work on-call instead of as a full-time employee.