What does "P.r.n." mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
"P.r.n." is a term used in medicine that stands for the Latin phrase "pro re nata", which means "as needed". It is often used in prescriptions to indicate that a medication should be taken when the patient feels it's necessary, rather than at regular intervals. This is typically used for conditions that have symptoms which come and go, such as pain or nausea. The patient has the discretion to take the medication based on the severity of their symptoms.
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