prn
as needed
q
every
qam
every morning
qpm
every evening
qhs
every bedtime
ud
as directed
qs
quantity sufficient
nte
not to exceed
qd
every day
qh
every hour
q4h
every 4 hours
bid
twice a day
tid
three times a day
qid
four times a day
ac
before meals
pc
after meals
c
with (usually with meals)
po
orally
qod
every other day
hs
at bedtime
sid
vet medicine, same as qd
apap
acetaminophen
asa
aspirin