Prescription Abbreviations are often known as Sig Codes which are very important for a Pharmacist to remember. Doctors or Medical Practitioners use these abbreviations or sig codes in the prescription. Nowadays most Doctors use electronic prescriptions so the uses of these abbreviations are reduced highly. But it is very important for the Pharmacy school students or pharmacy technicians or pharmacists to learn and remember these codes as they are a Very Important part of the Pharmacy study. In this post, we have shared a master list of these abbreviations so it could help you a lot. We have also shared important books and important study notes you should also check them out.

Master List of Prescription Abbreviations (Sig Codes)
Master List of Prescription Abbreviations (Sig Codes)

List of All Prescription Abbreviations or Sig Codes

There are more than 120+ abbreviations are used while a prescription is being written, some of them are used very commonly and some of them are used very rarely. We here made the list of all the abbreviations that are used while writing a prescription. All abbreviations are classified into different categories like Drug Dosage Form, Measurement, Route of Administration and Time so you can find them accordingly.

Prescription Abbreviations or Sig Codes used for Drug Dosage Form

Abbreviations MeaningLatin Term
aq, aquaWater
capsCapsules
cmCream
elixElixirs
LiqLiquid
SR, XR, XLSlow or Extend Release
suppSuppositories
syrSyrups
tabTablets
suspsuspensionsuspensio
ung., oint.Ointments
pulvPowderpulvis
pilPillspilula
pastPastepasta
nebNasal Spraynebula
naristNasal Dropnaristillae

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Prescription Abbreviation or Sig Codes used for Route of Administration

AbbreviationMeaning
a.d.Right ear
a.s., a.l.Left ear
a.u.Each ear
i.m., IMIntramuscular
i.v., IVIntravenous
i.v.p., IVPIntravenous push
inj.
Injection
IVPBIntravenous piggyback
o.d.Right eye
o.s., o.l.Left eye
o.u.
Each eye
p.o.By mouth
p.r.Rectally
p.v.Vaginally
per neb
By nebulizer
S.L.Sublingually, under the tongue
SC, subc, subqSubcutaneously
top.Topically
Most Common Latin Rx Terms
Most Common Latin Rx Terms

Prescription Abbreviation or Sig Codes used for Time

AbbreviationMeaning
a.c.Before food, before meals
a.m.Morning
b.i.d., bid, bd Twice a day
hHour, at the hour of
h.s.
At bedtime
p.c.After food, after meals
p.m.
Afternoon, evening
p.r.n., prn
As needed
qeach, every
q.d.
Every day
q.hEvery hour
q.i.d., qidFour times a day
qodEvery other day
Stat.Immediately
t.i.d., tid, tdsThree times a day
ieb. alt.every other day, on alternate days
noct.at night
omn. bih.every 2 hours
omn. hor.every hour
q.i.d.4 times a day

Prescription Abbreviation or Sig Codes used for Measurement

AbbreviationMeaning
tsp.Teaspoon
tbsp.Tablespoon
one-half or ssone-half
one
one
a.a., aa
of each
ad
to, up to
aq. adadd water up to
dil.dilute
div.divide
f, fl.
Fluid
fl. oz.Fluid ounce
g., G., gm.Gram
gtt.Drop
l, LLiter/Litre
mcg.Microgram
mEqmilliequivalent
mg.Milligram
ml., mLMilliliter/Millilitre
q.s.A sufficient quantity
q.s. adAdd sufficient quantity to make

Prescription Abbreviation or Sig Codes used for Numbers

RomanEnglishLatin
IoneUnus
IItwoDuo
IIIthreeTres
IVfourQuatuor
VfiveQuinque
VIsix
VIIsevenseptem
VIIIeightocte
IXninenovem
Xtendecem
XIelevenundecem
XVfifteenquindecim
XXtwentyviginti
Lfiftyquinguaginta
Cone hunderdcentum

Other Prescription Abbreviation or Sig Codes

AbbreviationMeaning
without
without
cWith
disp.Dispense
f, ft.Make, Let it be made
NR
No refill
sig.Label, write
ut dict., u.d.As directed
s.o.swhen needed
NMTnot more than
dagive
D5W, DEWdextrose 5% in water (intravenous sugar
solution)
D5NSdextrose 5% in normal saline (0.9%)
(intravenous sugаr solution)
D5LRdextrose 5% in lactated Ringer’s
solution(intravenous sugаr solution)
D10W, D10Wdextrose 10% in water intravenous sugar
solution)
cochlspoonful
C.V.tomorrow evening
c.n.tomorrow night
c.m.tomorrow morning
c.C.with food [or]
cubic centimetre
AAAapply to affected area

Tips to remember Prescription Abbreviation or Sig Codes

Remembering these sig codes is a very confusing thing, so here we share a small tip which can solve your confusion.

When you see O remeber this is an eye which is also round.

When you see A remember this is Eyer because audio which we hear via our eyers is also conatins A.

When you see U remember this is as a face needing both eyes or ears.

Frequently Asked Questions

What is OD and BD in prescription?

OD and BD are the short form Latin words Omni die and bis in die. The meaning of OD in English is Once Daily and BD mean twice daily.

What does Rx stand for?

Rx is a Latin term which means thou take or you take in English. In ancient times it is believed to be the sign of God Jupiter who is known as God of Healing. By writing Rx in the prescription the prescription writer prays to God for the fast recovery of the patient. The part in the prescription where Rx is written is known as Superscription of a prescription.

what does hs mean in medical terms?

The full form of HS is “Hora Somni”. Hora Somni is a Latin word that means every bedtime in English. HS is written in the Prescription for the medication that we have to before going to bed.

Conclusion

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