Ad lib
As desired
BID
Twice a day
c
With
d/c
Discontinue
DAW
Dispense as written
H
Hour
NPO
Nothing by mouth
PC
After meals
PRN
As needed
Q12H
Every 12 hours
QAM
Every morning
QD
Every day
Qdaily
Every day
QID
Four times a day
QOD
Every other day
QPM
Every afternoon
QS
Quantity sufficient
QW
Every week
s
Without
STAT
Immediately
TID
Three times a day
UD
As directed
AC
Before meals