Common Symbols used by Doctors, A Simple Guide for Everyone

Jul 03, 2025

When you visit a doctor, you might notice strange abbreviations written on your prescription, reports, or medical files. These medical abbreviations are commonly used by doctors, nurses, and pharmacists to save time and space. But for patients, these can be confusing.

In this blog, we’ll help you understand the most common doctor abbreviations in a very simple and easy way. Whether you're reading your prescription or just curious, this guide will help you feel more confident about your healthcare.

Why Do Doctors Use Abbreviations?

Save time while writing
Quickly share important information
Keep medical records short and clear

Common Doctor Abbreviations You Should Know

1. Prescription Abbreviations (When to Take Medicine)

Abbreviation	Meaning	Example
OD	Once daily	Take medicine 1 time per day
BD / BID	Twice daily	Take medicine 2 times per day
TID	Three times daily	Take medicine 3 times per day
QID	Four times daily	Take medicine 4 times per day
HS	At bedtime	Take medicine before sleeping
AC	Before meals	Take medicine before eating
PC	After meals	Take medicine after eating
PRN	When needed	Take medicine only if required
STAT	Immediately	Take medicine right away

2. How to Take Medicine (Routes of Medicine)

Abbreviation	Meaning
PO	Take by mouth (oral)
IV	Injection into vein
IM	Injection into muscle
SC / SQ	Injection under skin
SL	Medicine under the tongue
PR	Medicine through rectum
TOP	Apply on skin (cream/gel)
INH	Inhale (for asthma etc.)

3. Medicine Forms Abbreviations

Abbreviation	Meaning
Tab.	Tablet
Cap.	Capsule
Syr.	Syrup
Susp.	Suspension
Inj.	Injection
Supp.	Suppository

4. Important Health Abbreviations

Abbreviation	Meaning
BP	Blood Pressure
HR	Heart Rate
RR	Breathing Rate
NPO	Nothing by mouth (No food or drink)
FU	Follow-up (Next doctor visit)
Pt.	Patient
C/O	Complains of (Your problem)
D/C	Stop medicine or discharge from hospital

Why It’s Important to Understand These Abbreviations?

Helps you follow the prescription correctly
Improves communication with your doctor
Avoids mistakes in taking medicines
Makes you feel more involved in your health care

Quick Tips:

Always ask your doctor or pharmacist if you don’t understand any part of your prescription.
Write down your schedule to remember when to take your medicines.
Never guess abbreviations. When in doubt, double-check!

Reading a doctor’s prescription doesn’t have to be confusing! With this simple guide, you can now easily understand common doctor abbreviations and feel more confident about your treatment.

If you are looking for trusted and doctor-recommended medicines, explore Steris Healthcare Pvt. Ltd. – a reliable name in the pharma industry since 2018. We provide high-quality, result-oriented medicines across various health categories. Doctors across India recommend Steris for its effective, safe, and affordable products.Steris is dedicated to improving patient health outcomes with scientifically proven medicines.

Next time you get a prescription, look for Steris Healthcare medicines — where quality meets trust.

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Common Symbols used by Doctors, A Simple Guide for Everyone

1. Prescription Abbreviations (When to Take Medicine)

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