IM
intramuscularly
IV
Intravenously
SL
sublingual
ID
intradermal
SUBCUT
subcutaneously
GT
gastrostomy tube
NG
nasogastric tube
NJ
nasojejunal tube
PO
by mouth, orally
PR
per rectum, rectally
Q
every
NPO
nothing per os
QTT
drops
tab
tablet
ac
before meals
pc
after meals
ad lib
as desired, freely
prn
as required
stat
immediately
BID
twice a day
TID
three/day
QID
four/day
min
minutes
h/hr
hour