What does the Medical abbreviation PRN mean

What does the Medical abbreviation PRN mean - The medical abbreviation "PRN" stands for "pro re nata", which is a Latin phrase that means "as needed". In medical settings, "prn" is often used to indicate that a medication should be given on an as-needed basis, rather than on a fixed schedule. For example, a patient with a headache might be instructed to take a pain reliever "prn" for their headache, meaning they should take it as needed when the headache occurs. Similarly, a patient with high blood pressure might be instructed to take a medication "prn" if their blood pressure exceeds a certain threshold, rather than taking it on a fixed schedule. It's important to follow the instructions for taking medications "prn" carefully, as overuse

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