as =
Left ear
ad =
Right ear
au =
Each ear
od =
Right eye
os =
Left eye
ou =
Each eye
po =
By mouth
pr =
Rectally
supp =
Suppository
ac =
Before meals
bid =
Twice a day
hs =
At bedtime
pc =
After meals
prn =
As needed
qid =
Four times a day
qd =
Every day
qod =
Every other day
tid =
Three times a day
gm =
Gram
qs =
Quantity sufficient (add sufficient quantity to make)
gtt =
Drop
tsp =
Teaspoon
q_h =
Every _ Hours
sl =
Sublingual