Before
B
Before meals
AC
Right ear
AD
Both ears
AU
Twice a day
BID
Capsule
C
Day or daily
D
Five times daily
FID
Drop(s)
GTT
Hour
H
At bedtime
HS
Milligram
Mg
Milliliter
ML
Nausea and vomiting
No
Right eye
OD
Left eye
OS
Both eyes
OU
After meals
PC
By mouth
PO
As needed
PRN
Every
Q
Every morning
QAM
Every day
QD
Every four hours
Q 4 H