SIG Codes

Abbreviations that indicate medication dosages, measurements, dosage times or frequency, and routes of administration to a pharmacist and a pharmacy technician; Pharmacy abbreviations that indication how to take a prescribed medication

p

after

pc

after meals

ad lib

as desired

u.d.

as directed

prn

as needed

hs

at bedtime

ac

before meals

by mouth (orally)

po; PO

daily

qd; QD