General Pharmacy Abbreviations
Directions/Sig Codes
Routes of Administration
General Medical Abbreviations
Prefixes/Suffixes
100

OTC

What is over-the-counter


100

hs

What is at bedtime

100

TOP

What is topical
100

ADHD

What is attention deficit hyperactivity disorder

100

anti-

What is inhibit, oppose

200
Rx

What is prescription

200

By mouth

What is po

200

Metered-dose inhaler

What is MDI

200

Do not resuscitate

What is DNR

200

Large

What is macro-

300

DAW

What is dispense as written
300

OD

What is right eye
300

TD

What is transdermal

300

HA

What is headache
300

-itis

What is inflammation

400

D5 1/2 NS

What is dextrose 5% in half normal saline

400

Before meal(s)

What is ac

400

Intravenous piggyback

What is IVPB

400

Non-steroidal anti-inflammatory drugs

What is NSAIDs

400
Harding

What is -sclerosis

500

WAC

What is wholesale acquisition cost

500

AU

What is both ears

500

IT

What is intrathecal

500

APAP

What is acetaminophen (Tylenol)

500

-rrhea

What is flowing discharge