Med Term
Once a day
QD(*)
Twice a day
BID
Three times a day
TID
Four times a day
QID(*)
Every hour
Q1H
Immediately
STAT
As needed
PRN
Three times a week
TIW
Intramuscular
IM
Every four hours
Q4H
Before Meals
AC
After meals
PC
Intravenous
IV
Every other day
QOD(*)
By mouth
PO
Hour of sleep (at bedtime)
HS
Under the tongue (Subingual)
SL
Topical
TOP
Capsule
CAP
Elixir
Elix
Solution
SOL or SOLN
Tablet
TAB
Ointment
Ung