Abbreviations
Immediately or at once
What is STAT.?
Every 2 hours
What is Q2H?
Every morning
What is QAM?
Twice a day
What is B.I.D?
Around the clock
What is A.T.C?
Every 6 hours.
What is Q6H?
At bedtime; as in "hour of sleep."
Four times a day
What is QID (q.i.d.)?
As desired.
What is Ad. Lib.?
Every 12 hours.
What is Q12H?
Every night at bedtime
What is QHS?
What is QWK
As directed; as in Ut dictum.
What is UD?
Every 24 hours
What is Q24H?
What is QAC?
Twice a week (often Monday/Thursday or similar)
What is BIM?
Use as needed; as in Pro re nata...
What is P.R.N?
Every 72hrs; as in every 3 days.
What is Q72H?
After meals
What is P.C?
Weekly; as in once a week.
What is QWK