What does the abbreviation PRN mean in medical terms?

The abbreviation PRN stands for "as needed," which is a crucial concept in medical terminology, particularly when it comes to administering medications. This means that a medication can be given when necessary, rather than at scheduled intervals. It allows for flexibility in treatment, enabling healthcare providers to address symptoms or conditions as they arise rather than adhering to a strict regimen. For example, a veterinarian might prescribe pain relief for an animal to be given PRN, allowing the owner to administer it only when the animal appears to be in discomfort.

In contrast, the other abbreviations do not pertain to this concept. "Before meal" typically indicates the timing for administering a medication in relation to eating, while "with food" suggests that a medication should be taken alongside meals to enhance absorption or reduce stomach irritation. "By prescription" refers to medications that require a doctor's authorization, which does not convey the idea of necessity or timing inherent in PRN. Thus, understanding the application of PRN is essential for effective medication management in veterinary practice.