ac
Before meals
pc
After meals
Daily
Everyday
bid
Twice a day
Tid
Three times a day
qid
Four times a day
qh
Every hour
qn
Every night
Stat
Immediately
q # hours
Every # hours
prn
As needed
3 times weekly
3 times a week
biw
Twice per week
IM
Intramuscularly
IV
Intravenously
IVP
Intravenous push
IVPB
Intravenous Piggyback
MDI
Meter dose inhaler
NEB
Nebulizer
NGT or ng
Nasogastric tube
HHN
Handheld nebulizer
PO or po
By mouth
PR or pr
In the rectum
SL
Sublingual