Pharmacology Abbreviations

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ac

before meals

ad lib

as desired

AM, am

morning

amp

ampule

bid

twice a day

c with line above it

with

cap

capsule

Cl

chloride

cm

centimeter

DC

discontinue

DS

double strength

DW

distilled water

D5W

dextrose, 5% in water

EC

enteric coated

elix

elixir

ER

extended release

Gm, g

gram

h, hr

hour

IM

intramuscular

IV

intravenous

IVPB

intravenous piggyback

K

potassium

KCL

potassium chloride

kg, Kilo

kilogram

KVO

keep vein open

LA

long acting

mEq

milliequivalent

mcg

microgram

mg

milligram

ml, mL

milliliter (equivalent to cc)

mm

millimeter

NaCl

sodium chloride

NEB

nebulizer

NG

nasogastric

NPO, npo

nothing by mouth

NS, N/S

normal saline (sodium chloride, 0.9%)

OTC

over the counter

pc

after meals

PCA

patient controlled analgesia

PM, pm

afternoon

po, PO

by mouth, orally

PRN, prn

whenever necessary

pt

pint, patient

qh

every hour

q2h

every 2 hours

q3h

every 3 hours

q4h

every 4 hours

QNS

quantity not sufficient

qs

quantity sufficient

RL, R/L

Ringer's lactate

s with line above it

without

SubQ, subq

subcutaneous

SL

sublingual

sol

solution

SR

sustained release

stat

immediately and once only

supp

suppository

tab

tablet

tbsp, T, tbs

tablespoon

tid

three times a day

TO

telephone order

tsp, t

teaspoon

vag

vaginal

Vit

vitamin

VO

verbal order

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