ac
before meals
pc
after meals
hs
at bedtime
q day
one time every day
bid
two times per day
tid
three times per day
qid
four times per day
q 6 hours
given every 6 hours
prn
as needed
dc, d/c
discontinue
po
through the mouth
IM
intramuscular
NPO
nothing by mouth
SC, SQ
subcutaneous
IV
intravenous
IVPB
intravenous piggyback
IVP
intravenous push
TD
transdermal (on the skin)
PR
per rectum
SL
sublingual, under the tongue
Bucc
buccal, between gums and cheek
ID
intradermal, bubble on skin
INH
inhalation
four things to know from drug labels
name, form, expiration, dosage