CNA

?

before

p

after

q

every

d

day

am

Morning

pm

Afternoon

qh

every hour

q2h

every 2 hours

ac

before meals

q3h

every 3 hours

pc

after meals

q4h

every 4 hours

qid

four times a day

prn

as often as necessary

bid

two times a day

tid

three times a day

stat

immediately

MN

midnight