A
q4h
Every four hours
prn
As needed
tsp
Teaspoon
ac
Before meals
OS
Left eye
qh
Every hour
AD
Right Ear
ml
Milliliter
MAR
Medication Administration Record
ROM
Range of motion
qod
Every other day
otc
Over the counter
Kg
Kilogram
npo
Nothing by mouth
gtt
drop
hs
Hour of sleep
I&O
Intake and Output
Tbsp
Tablespoon
pc
After meals
IV
Intravenous
tid
Three times a day
OU
Both eyes
cc
Cubic Centimeter
qid
Four times a day
mcg
Microgram