NS 3% Injection

Written By Dr. Lipika Khurana, PGDHHM, BDS

Reviewed By Dr. Mekhala Chandra, MD, MBBS

Last updated on 25 Nov 2025 | 03:05 PM (IST)

NS 3% Injection consists of purified salt solution. It is used for short term fluid replacement. Thus, it treats hypovolemia that can result due to any dehydration, or injury. It helps to restore the salt and electrolyte levels in the body.

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General Information

Contains

Sodium Chloride (3%)

Marketer

Swaroop Pharmaceuticals Private Limited

Storage

Store below 30°C

The content is shown in English

Product introduction

NS 3% Injection works by replenishing salt and electrolyte levels in the body. This injection must be administered under the supervision of a healthcare professional. You should not take it, if you have any known allergy from this injection. Your doctor may check your blood pressure and ask you to get regular blood tests done while you are using this injection.

The use of this medicine may cause some common side effects such as injection site reactions, hypotension, fever, tremor, and chills. Let your doctor know if you are bothered by any of these. Before receiving this medicine, inform your doctor if you are pregnant or breastfeeding or if you have kidney diseases as dose adjustment may be required. This injection is safe to use in patients suffering from liver diseases.

Uses of NS Injection

Treatment of Short term fluid replacement after trauma
Treatment of Dehydration

Benefits of NS Injection

Treatment of Short term fluid replacement after trauma
Appropriate fluid replacement is very essential to restore normal brain activity and other vital functions of the body to promote healing as well as speedy recovery. NS 3% Injection helps restore this fluid imbalance and aids in improving the overall health of the patient. It is given as an injection by a doctor or nurse and should not be self-administered.

Treatment of Dehydration
NS 3% Injection protects the patient from dehydration and electrolyte imbalance after any trauma or injury. It is given as an injection by a doctor or nurse and should not be self-administered. Follow your doctor’s instructions carefully to get the most benefits.

Side effects of NS Injection

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of NS

Injection site reactions (pain, swelling, redness)
Fever
Tremors
Chills
Hypotension (low blood pressure)

How to use NS Injection

Your doctor or nurse will give you this medicine. Kindly do not self administer.

How NS Injection works

NS 3% Injection helps restore the body's fluid and salt balance when it has been lost due to trauma, dehydration, or illness. It works by replacing essential electrolytes, especially sodium, which helps maintain proper hydration, support blood pressure, and ensure that muscles and nerves function normally.

Quick tips

Your doctor has prescribed NS 3% Injection to decrease oedema (swelling) and haziness of the eye after cataract surgery.
Let your doctor know if you are on a low-sodium diet, as this injection adds extra sodium to your body.
Report any swelling, breathing issues, or unusual tiredness during treatment, as these could be signs of fluid overload.
Stinging sensation may occur for 1-2 mins. Notify your doctor if it persists for longer.
Make sure to use within 4 weeks of opening the bottle.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with NS 3% Injection. Please consult your doctor.

Pregnancy

CONSULT YOUR DOCTOR

The safety of NS 3% Injection during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.

Breast feeding

CONSULT YOUR DOCTOR

Information regarding the use of NS 3% Injection during breastfeeding is not available. Please consult your doctor.

Driving

UNSAFE

NS 3% Injection may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

CAUTION

NS 3% Injection should be used with caution in patients with kidney disease. Dose adjustment may be needed.

Liver

SAFE IF PRESCRIBED

NS 3% Injection is probably safe to use in patients with liver disease. Limited data suggest dose adjustment may not be needed.

Interaction with drugs

Taking NS with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Moderate

Lithium carbonate (Oral Route)

Do not consume sodium-containing medicines with Lithium carbonate and Sodium Chloride. Your doctor may monitor your Lithium carbonate levels closely. Sodium Chloride may reduce blood levels of active form of Lithium carbonate.

Moderate

Tolvaptan (Oral Route)

If concurrent use is essential, your doctor may monitor your blood sodium levels closely. Sodium Chloride may reduce blood levels of active form of Tolvaptan.

Frequently asked questions

Is NS 3% Injection harmful to humans?

Normally NS 3% Injection is an indispensable component of the human body. If given in required amount, it is very beneficial. However, it can be harmful when given in more than the required amount or concentration. In high doses, it can lead to fluid overload, swelling of feet and legs, and sodium accumulation in the body.

What does NS 3% Injection do to the body?

NS 3% Injection is normally present in your body. Sodium and chloride ions help maintain the fluid and electrolyte balance in the body. Sodium is an electrolyte which maintains the water balance in your body and keeps your body hydrated. It helps in maintaining normal functioning of the nerves, heart and other organs. NS 3% Injection is used to treat or prevent sodium loss caused by dehydration, diarrhea or other causes.

Is NS 3% Injection used to clean wounds?

Yes, NS 3% Injection is used to clean wounds. It serves as a very good solution which can be used to irrigate and wash or clean body cavities, tissues or wounds. It also serves as a solvent for various medicines to be used in various conditions. It is for external use only and should not be swallowed.

Do we need to be cautious while taking NS 3% Injection?

Yes, you should be cautious if you have certain conditions, such as heart disease or heart failure, impaired kidney function, or diabetes. Also, stay cautious if you have swelling in various parts of your body like feet and ankles. It usually does not cause any major side effects but you should be cautious and should give your doctor a proper history before you take NS 3% Injection.

Fact Box

Chemical Class

Alkali Metal Chlorides

Habit Forming

Therapeutic Class

BLOOD RELATED

Action Class

Crystalloids

Related lab tests

Potassium

Sodium

Urine Routine & Microscopy

References

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Swaroop Pharmaceuticals Private Limited
Address: RAM KUTIR KELA NAGAR ALIGARH UTTAR PRADESH UP 202001 IN.

Vendor Details

Country of origin: India

Lab tests offered by us

Why we need a prescription?

Provide right medicines

Prescriptions are complex documents. We proof read and recheck at various steps to provide you the right medication in the correct form and dose

In accordance with the law

Most medicines cannot be sold without a valid prescription, as per the Drugs and Cosmetics Act, 1940 and Rules, 1945

NS 3% Injection

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General Information

Contains

Marketer

Storage

Product introduction

Uses of NS Injection

Benefits of NS Injection

Side effects of NS Injection

How to use NS Injection

How NS Injection works

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Lithium carbonate (Oral Route)

Tolvaptan (Oral Route)

Frequently asked questions

Is NS 3% Injection harmful to humans?

What does NS 3% Injection do to the body?

Is NS 3% Injection used to clean wounds?

Do we need to be cautious while taking NS 3% Injection?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Potassium

Sodium

Urine Routine & Microscopy

References

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

Lab tests offered by us

Related/Popular tests