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PRN means "as needed." It stands for "pro re nata" which translates to "in the circumstances."

It is routinely used by physicians in prescribing instructions to mean "as needed for." An example of such might include "Benadryl 50mg qhs prn insomnia."("qhs" is another Latin abbreviation, which stands for quaque hora somni, or "at the hour of sleep or bedtime.") Fortunately for patients, pharmacists are also familiar with these shorthand notations. Therefore, when used in medical situations, specifically for medications, it means that the medication is to be used only when needed, rather than on a consistent basis.

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10y ago
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14y ago

PO=By Mouth. QHS=At Bedtime. (Medical Terminology)

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Wiki User

14y ago

HS means - hours of sleep

PRN means - as needed

Therefore it means to take the medicine at bedtime whenever you think you need it.

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13y ago

1 tablet, by mouth, twice a day, as needed.

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10y ago

1 po qhs prn means one by mouth (swallow one) at bedtime as needed.

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Wiki User

11y ago

PO qhs means by mouth each bedtime, meaning take orally each night.

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Kimberly Riley-Kouya...

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4y ago

1 by the hour of sleep

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elmasa cleaning

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4y ago

PO qhs means by mouth each bedtime

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Q: What does the medical abbreviation prn mean?
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What is the medical term meaning as needed?

prn is the medical abbreviation meaning when required or requested.Pro re nata which is commonly seen or heard as prn. Pro re nata is Latin and literally means, for the thing born.PRN is the medical abbreviation for as necessary.


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What is the abbreviation for as needed or whenever necessary?

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What does the medical abbreviation Rx mean?

Rx means prescription in a medical context.It is usually a prefix in a prescription e.g.Rx Paracetemol 1g tabs PRN PO max 4g QDSand it can be considered shorthand for the latin word recipie, or a direction to "take".Medical prescription.


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What is the literal translation for PRN?

That is an abbreviation for Pro re nata, Latin for"in the circumstances." In prescriptions for medicine, it is used to mean "as needed."