Multiple choice general knowledge science & technology

p.r.n. means...

  1. when necessary

  2. As necessary

  3. if necessary

  4. all
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

p.r.n. is the medical abbreviation for 'pro re nata' - Latin for 'when necessary' or 'as the occasion arises'. It indicates that a medication should be taken only when needed, not on a fixed schedule. Options B and C ('As necessary' and 'if necessary') are essentially the same meaning as A but A is the standard medical terminology.

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