Rx Abbreviations

aa.

of each

ad

up to; to make

disp.

dispense

div.

divide

d.t.d.

give of such doses

ft.

make

M.

mix

No.

number

non rep. / NR

do not repeat (no refills)

q.s.

sufficient quantity

q.s. ad

sufficient quantity to make

Sig.

Write (directions on label)

µg

microgram

cc OR cm3

cubic centimeter

fl

fluid

fl℥ OR f℥

fluid ounce

flʒ OR fʒ

fluid dram (on an Rx, taken to mean 1 teaspoon = 5 mL, even though technically distinct)

g

gram

gal

gallon

gtt

drop

I.U. or IU

International Units

kg

kilogram

L

liter

lb

pound

m2

square-meter

mcg

microgram

mEq

milliequivalent

mg

milligram

mL

milliliter

mOsm OR mOsmol

milliosmoles

oz

ounce

pt

pint

qt

quart

ss

one-half

Tbsp

tablespoonful

tsp or ʒ

teaspoonful

U

unit(s)

BSA

Body Surface Area

MIU

million international units

mIU or milli-IU

thousandth of an International Unit

fl℥ss OR f℥ss

1/2 (one-half) fluid ounce

mg/kg

milligram (of drug) per kilogram (of body weight)

mg/m2

milligram (of drug) per meter-squared (of body surface area)

mL/h OR mL / hr

milliliters per hour

°

hours

a

before

a.c.

before meals

admin

administer

AM

morning

aq. water

water

ATC

around-the-clock

b.i.d.

twice a day

b.i.w.

2 times a week

c

with

d

day

dil. dilute

dilute

et

and

h OR hr.

hour

h.s. OR qhs

(every day) at bedtime

min. minute(s)

minute(s)

m & n

morning and night

N & V OR N/V

nausea and vomiting

N.M.T. / N.T.E. / max

No more than / not to exceed / maximum

noct.

night

N/V/D

nausea, vomiting, and diarrhea

p

after

p.c.

after meals

p.o.

by mouth

p.r.n.

as needed

PM

afternoon or evening

q

every

q.d. or QD

(once) daily

q.i.d.

4 times a day

q.o.d.

every OTHER day

q4h, q6h, etc.

every 4 hours, every 6 hours, etc.

qAM

every morning

rep. OR repatur

repeat (refill)

s

without

s.i.d.

once a day

stat.

immediately

t.i.d.

3 times a day

t.i.w.

3 times a week

ut dict. OR u.d.

as directed

UUD

use as directed

wk.

week

x5d

for 5 days

F

Change

APAP

acetaminophen

ASA

aspirin

EtOH

Ethanol (alcohol)

HCTZ

hydrochlorothiazide

NSAID

nonsteroidal anti-inflammatory drug

OTC

over-the-counter

purified water

AZT

zidovudine

BC

birth control

CHC

combined hormonal contraceptive

EES

erythromycin ethylsuccinate

EPI

epinephrine

EPO

erythropoietin