ABBREVIATION
MEANING
ABBREVIATION
MEANING
a.c.
before meals
q.h.
every hour
b.i.d., bid
twice a day
q.i.d., qid
four times a day
h.s.
at bedtime
q.3h., q3h
every 3 hours
non rep
do not repeat
q.6h., q6h
every 6 hours
p.c.
after meals
stat.
Immediately
p.r.n.
as needed
t.i.d., tid
three times a day
Table 1-2. Times of administration.
ABBREVIATION
MEANING
ABBREVIATION
MEANING
I.M., IM
intramuscularly
s.c., s.q.
subcutaneously
I.V., IV
intravenously
P.O.
by mouth
O.D.
right eye
caps.
capsule
o.s., O.S.
left eye
liq.
liquid, solution
O.U.
both eyes
tab.
tablet
Table 1-3. Routes of administration and dosage forms.
WEIGHT
VOLUME
milligram
mg.
milliliter
ml.
gram
g., Gm.
cubic centimeter
cc.
kilogram
kg., Kg.
liter
l., L.
Table 1-4. Metric system abbreviations.
WEIGHT
VOLUME
grain
gr.
fluid dram
dram
fluid ounce
fl. oz.,
ounce
oz.,
pint
O., pt.
quart
qt.
gallon
C., gal.
NOTE: The fluid dram and the fluid ounce are often abbreviated without the "f" being
used. It can be assumed that when the dram symbol is used with a liquid, the
fluid dram is intended.
Table 1-5. Apothecary system abbreviations.
MD0913
1-5