Lasarc 20mg Injection 1.0 Injection in 1 vial

Last Updated: April 1st, 2026

Lasarc 20mg Injection is a product of Genx Pharma

Composition: Furosemide (20mg)

Pack of 1 injection

₹ 5.10

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Limited Stock

All Details About Lasarc 20mg Injection

Find out detailed description, uses, directions of use, side effects, warnings and precautions, frequently asked questions about Lasarc 20mg Injection

Description:

Lasarc 20mg Injection belongs to a group of medicines called diuretics. It is used for the emergency treatment of very high blood pressure (hypertensive emergency), as it reduces the blood pressure immediately. It also rapidly reduces the swelling (edema) caused by too much water in the body.

Lasarc 20mg Injection helps your body get rid of extra water and salt through urine. It is commonly used to treat people with excess fluid build-up due to heart failure, liver or kidney disease. It is injected into a vein under the supervision of a doctor. Your doctor may monitor your blood pressure after giving this medicine.

Ordinary side effects of this medicine include dizziness, weakness, dehydration, decreased potassium level in blood, increased blood uric acid, decreased magnesium level in blood, and increased thirst. These are usually mild and disappear after a short time. Consult your doctor if they bother you or do not go away.

Earlier taking this medicine, let your doctor know if you have any liver problems. Pregnant or breastfeeding women should also consult their doctor before taking it. Regular monitoring of kidney function tests and electrolyte levels is important while using this medicine.

It may reduce the potassium level in your blood so your doctor may ask you to add potassium-rich foods to your diet (such as bananas, coconut water, etc.) or prescribe supplements. Any medication that is advised by your doctor for the long-term treatment of your underlying condition should be continued even after this emergency injection.

Uses:

Directions For Use:

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

Side Effects:

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

Ordinary side effects of Lasarc

Dizziness
Weakness
Dehydration
Decreased potassium level in blood
Increased blood uric acid
Increased thirst
Decreased magnesium level in blood

Warning & Precautions:

Alcohol

UNSAFE

It is unsafe to consume alcohol with Lasarc 20mg Injection

Pregnancy

CONSULT YOUR DOCTOR

The safety of Lasarc 20mg 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

Lasarc 20mg Injection may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.

Driving

UNSAFE

Lasarc 20mg Injection may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

SAFE IF PRESCRIBED

Lasarc 20mg Injection is safe to use in patients with kidney disease. No dose adjustment is recommended.
However, use of Lasarc 20mg Injection is not recommended in severe kidney disease patients who are unable to pass urine or the kidney damage is due to some medicines. Please inform your doctor.

Liver

CAUTION

Lasarc 20mg Injection should be used with caution in patients with liver disease. Dose adjustment may be needed.

FAQs:

How is Lasarc 20mg Injection different from Torasemide?

Both Lasarc 20mg Injection and Torasemide are loop diuretics. They are used to treat high blood pressure and edema caused by an underlying liver, kidney or lung diseases. Unlike Torasemide, Lasarc 20mg Injection is also used in the treatment of hypercalcemia (high calcium levels in the blood). Torasemide has a longer duration of action and is safer to use in patients with renal failure, as compared to Lasarc 20mg Injection.

Should you drink a lot of water when taking Lasarc 20mg Injection?

It is advised to take an adequate amount of water if you are taking Lasarc 20mg Injection. This is because Lasarc 20mg Injection works by eliminating the extra fluid and electrolytes from your body by increasing the urine production. This elimination of fluids may increase the chances of dehydration if you sweat a lot, exercise vigorously or if the climate is hot. However, if you have kidney or heart problems, you must consult your doctor who will suggest the amount of water that you should be taking. Consult your doctor for any further query or concern.

What is Lasarc 20mg Injection used for?

Lasarc 20mg Injection is used in emergency conditions to lower very high blood pressure (hypertensive crisis). It effectively lowers and normalizes blood pressure rapidly, thus preventing heart attack or stroke. It also helps to remove excess fluids and electrolytes from the body and reduces swelling (edema) due to fluid retention.

What are the side effects of Lasarc 20mg Injection?

The most common side effects of Lasarc 20mg Injection are dizziness, weakness, dehydration, decreased potassium and magnesium levels in blood and increased thirst. You may also notice some injection site reactions such as swelling, pain and redness. However, these are temporary and usually resolve on their own. Consult your doctor if the symptoms persist for long or worry you.

How long does a Lasarc 20mg Injection last?

A. Lasarc 20mg Injection starts acting as early as five minutes and its effect lasts for about two hours. Lasarc 20mg Injection may cause depletion of sodium, chloride, water and other minerals from the body. Therefore, close monitoring is required if a person is being treated with Lasarc 20mg Injection.

What other lifestyle changes should I make while taking Lasarc 20mg Injection?

Lifestyle changes play a major role in keeping you healthy. Stop smoking and taking alcohol as this helps in lowering your blood pressure and preventing heart problems. Exercise regularly and take a balanced diet that includes whole grains, fresh fruits, vegetables and fat-free products. Avoid taking excess salt in your diet. Practice yoga or meditation and find ways to reduce or manage stress in your life. Ensure that you have a sound sleep every night as this also reduces your stress and hence helps in keeping your blood pressure normal. Consult your doctor if you need any further help to get maximum benefit of Lasarc 20mg Injection and to keep healthy.

Can Lasarc 20mg Injection cause weight gain?

No, Lasarc 20mg Injection does not cause weight gain. On the contrary, you may lose weight as it makes your body get rid of the excess of fluids from your body.

Written by:
Dr. T. Sharmila Krishna
M.B.B.S., MD (Biochemistry)

Reviewed by:
Dr. Sureshbabu Yadav
M.B.B.S., DIP.DIAB, F.R.S.H

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