SIG Codes: Summer 2026

QD

every day

BID

twice a day

TID

three times a day

QID

four times a day

PO

by mouth, orally

PRN

as needed

AM

morning

HS

at bedtime

Q

every

PR

rectally

qAM

every morning

N/V

nausea/vomiting

tab

tablet

cap

capsule

DAW

dispense as written

PV

vaginally

QAD/QOD

every other day

disp

dispense

DR

delayed release

EC

enteric-coated

ER/XR

extended release

H/HR

hour

AAA

apply to the affected area

NPO

nothing by mouth

QH

every hour

ID

intradermal

IM

intramuscular

IN

intranasal

Inh

inhalation

Inj

injection

IR

immediate release

IV

intravenous

Neb

nebulizer

QS

quantity sufficient

Q__H

every__hours

SC/SQ/SubQ

subcutaneously

SL

sublingually

SOB

shortness of breath

stat

immediately

supp

suppository

susp

suspension

AD

right ear

AS

left ear

AU

both ears

D/C

discontinue

PC

after meals

PM

evening/afternoon

QW

every week

Gtt

drop

Gr

grain

Et

and

ODT

orally disintegrating tablet

UD

as directed

TAD

take as directed

HA

headache

OD

right eye

OS

left eye

OU

both eyes

tbsp

tablespoon

tsp

teaspoon

I

one

II

two

III

three

IV

four

V

five