Common Prescription Abbreviations and Symbols

42 terms by tracey_lozada 

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a (with horizontal line on top)

before; L. ante

a.c.

before meals; L. ante cibum

a.m.

before noon; L. ante meridiem

b.i.d.

twice a day; L. bis in die

h

hour; L. hora

h.s.

at the hour of sleep (bedtime); L. hora somni

noc.

night; L. noctis

p (with horizontal line on top)

after; L. post

p.c.

after meals; L. post cibum

p.m.

after noon; L. post meridiem

p.r.n.

as needed; L. pro re nata

q

every; L. quaque

q.d.

every day; L. quaque die

qh

every hour; L. quaque hora

q2h

every 2 hours

q.i.d.

four times a day; L. quarter in die

q.o.d.

every other day; L. quaque altera die

STAT

immediately; L. statium

t.i.d.

three times a day; L. ter in die

AD

right ear; L. auris dextra

ad lib.

as desired; L. ad libitum

amt

amount

aq

water; L. aqua

AS

left ear; L. auris sinistra

AU

both ears; L. auris unitas

c (with a horizontal line on top)

with; L. cum

NPO

nothing by mouth; L. non per os

OD

right eye; L. oculus dexter

OS

left eye; L. oculus sinister

OU

both eyes; L. oculi unita

per

by or through

Rx

recipe or prescription

s (with horizontal line on top)

without; L. sine

Sig

label or instruction to the patient; L. signa

ss (with horizontal line on top)

0.5 or use; L. semis

wa

while awake

x

times or for (x6 = times 6; x2d = for 2 days)

>

greater than

<

less than

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