ad lib
as desired
AM
morning
ASAP
as soon as possible
bid
twice a day
noc
night or bedtime
PM
afternoon
prn
as needed
PTA
prior to admission
qd
every day
qid
four times a day
qod
every other day
STAT
immediately
tid
three times a day
1x/wk
once a week
2x/wk
twice a week
3x/wk
three times a week
1x/mo
once a month
2x/mo
twice a month
3x/mo
three times a month