prn

See also: PRN and p.r.n.

English

Phrase

prn

1. (medicine) Abbreviation of pro re nata.

   Alternative forms: PRN, p.r.n.

   • 1988, E[dward] J[ames] Moran Campbell, Not Always on the Level, [London]: British Medical Journal, →ISBN, page 182:

     “‘My return fare was £171. 6s. 0d. and I enclose the counterfoil. I have no record of other expenses; the major items were chilled liquid sedatives on the flight home at 55 cents a shot. Although taken prn, the last dose I remember is the fourth.”