Lasix (Furosemide)

Lasix
4.924 ratingsReviews
Generic:
Furosemide
Indications:
congestive heart failure hypertension swelling
Analogs:
Furosemide Bumetanide Torsemide Ethacrynic Acid Hydrochlorothiazide Chlorthalidone Indapamide Spironolactone Bumex Demadex Edecrin Aldactone Metolazone
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Lasix 40 mg

Quantity Price per tablet You save Total price
10 $6.20 - $62.00
20 $3.50 $54.00 $70.00
30 $2.60 $108.00 $78.00
60 $1.43 $286.00 $86.00
90 $1.04 $464.00 $94.00
120 $0.84 $643.00 $101.00
180 $0.61 $1,007.00 $109.00
270 $0.46 $1,550.00 $124.00
360 $0.39 $2,092.00 $140.00

Lasix 100 mg

Quantity Price per tablet You save Total price
10 $6.30 - $63.00
20 $3.45 $57.00 $69.00
30 $2.57 $112.00 $77.00
60 $1.40 $294.00 $84.00
90 $1.09 $469.00 $98.00
120 $0.93 $645.00 $111.00
180 $0.69 $1,009.00 $125.00
270 $0.62 $1,534.00 $167.00
360 $0.54 $2,073.00 $195.00

Manufacturers

ApotexApotex Inc.Aventis Pharma LimitedGeno Pharmaceuticals LimitedHexal AGMedibest Pharma Pvt. Ltd.ratiopharmratiopharm GmbHSanofiSanofi-AventisSanofi-Aventis AustraliaSanofi-Aventis Australia Pty LtdSanofi-Aventis CanadaSanofi-Aventis Canada Inc.Sanofi-Aventis DeutschlandSanofi-Aventis Deutschland GmbHSanofi-Aventis FranceSanofi-Aventis, S.A.Sanofi-Aventis U.S. LLCSanofi S.r.l.Sanofi Winthrop IndustrieTeva CanadaValidus Pharmaceuticals

Payment & Shipping

Package Example

Your order is carefully packed and ships within 24 hours. Here's the typical package.

Sized like a regular personal letter (9.4x4.3x0.3 inches), with no indication of its contents.

Front View
Front View
Side View
Side View
Back View
Back View
Shipping Times
Shipping MethodEstimated delivery
Express Free for orders over $300.00Estimated delivery to the U.S.: 4-7 days
Standard Free for orders over $200.00Estimated delivery to the U.S.: 14-21 days
EMSUSPS
Payment Methods
VisaMastercardAmerican ExpressDiscoverBitcoin, USDTApple PayGoogle PayPayPal

Discount Coupons

  • Independence Day - July 4, 2026 10% JULY410
  • Labor Day - September 7, 2026 7% LABOR07
  • Thanksgiving - November 26, 2026 9% THANKS09

Brand Names

Also known as (by country):
CountryBrand Names
Canada
Apo-Furosemide
New Zealand
Diurin Frusid

FAQ

Furosemide tablets require a prescription when purchased from local pharmacies in the United States. Our store policy allows customers to place an order without a prescription and have the medicine sent by mail.

Take the missed dose when remembered unless it is nearly time for the next scheduled dose. Skip the missed dose if the next dose is close, and do not take two doses together. Because furosemide increases urination, a late dose may be inconvenient, especially near bedtime.

The manufacturer for a future order cannot be guaranteed. Products with the same active ingredient, strength, and tablet form may be supplied by different manufacturers, so the tablet appearance, package design, and inactive ingredients can vary.

Do not use tablets if the seal, blister, or container appears damaged, opened, wet, or otherwise compromised. Keep the package and check the active ingredient, strength, dosage form, lot number, and expiration date before the discrepancy is resolved.

Solid oral tablets can normally be transported when they are appropriately packed to protect them from moisture, light, crushing, and opening. Store the tablets at 68°F to 77°F; excursions from 59°F to 86°F are permitted. After arrival, inspect the package for damage and keep the container tightly closed and protected from light.

This product is available as oral tablets in 40 mg and 100 mg strengths. The appropriate strength depends on the prescribed treatment plan and should not be chosen solely by comparing tablet size or appearance.

Furosemide tablets are taken by mouth, swallowed with water, according to the prescribed schedule. They are commonly taken in the morning; if a second daily dose is prescribed, it is generally taken earlier in the afternoon to reduce nighttime urination. The dose and frequency vary with the condition being treated, kidney function, fluid status, and response to treatment.

During pregnancy, furosemide should be used only when a clinician determines that the expected benefit justifies the potential fetal risk. During breastfeeding, use requires caution because furosemide can pass into breast milk and higher doses may reduce milk production; maternal need, milk supply, and the nursing infant should be considered.

Furosemide is a loop diuretic used to remove excess fluid in conditions such as heart failure, liver disease, and kidney disease. It may also be used to treat high blood pressure, either alone or with other blood pressure medicines. It increases urine output and can affect fluid and electrolyte balance.

Common effects include increased urination, thirst, dizziness, lightheadedness, nausea, and muscle cramps. Excess fluid or electrolyte loss can cause weakness, confusion, fainting, irregular heartbeat, or very low blood pressure. Seek prompt medical care for severe dizziness, fainting, marked weakness, confusion, or ringing in the ears or hearing changes.

Description

What Is Lasix Used for?

Lasix (Furosemide), also known as a water pill, is a diuretic. It's frequently recommended to aid the body's urination of extra salt and water. It is sometimes used to treat illnesses including congestive heart failure, kidney issues, or high blood pressure to lessen edema and fluid retention. It boosts the body's excretion of water, salt, and chloride and raises urine production.

FUROSEMIDEHow the Medicine Looks Like

Tiny yellow or white tablets containing 20 or 40 milligrams of furosemide. Transparent liquid intended for intravenous injection.

Applications

Lasix causes the kidneys to produce more urine, lowering the body's water content. When this happens, blood pressure can be lowered, and water retention in the arms, legs, or lungs can be released. Additionally, Furosemide can aid in lowering blood calcium levels.

How to Take

Tablets should be taken with a small amount of water. Taking the tablets in the morning is recommended, followed by breakfast. If necessary, take your afternoon dosages by no later than 6 p.m.; if not, you might have to wake up in the middle of the night to use the restroom. You will receive an injection of Furosemide from your doctor or nurse.

Interactions

Interactions between Lasix and other drugs and substances may reduce its effectiveness or raise the possibility of adverse side effects. Here are a few typical interactions:

  1. Other Diuretics: Using diuretics simultaneously increases the risk of electrolyte imbalances and dehydration by having synergistic effects.
  2. Furosemide lessens the body's excretion of lithium, raising the body's lithium levels. Due to the potential for toxicity, lithium dosage adjustments may be necessary.
  3. Aminoglycoside Antibiotics: Lasix may raise the risk of ototoxicity (injury to the ears) and nephrotoxicity (damage to the kidneys) when used with aminoglycoside antibiotics (e.g., gentamicin).
  4. Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): NSAIDs can lessen Furosemide's diuretic and antihypertensive effects. Kidney issues could also become more likely as a result of this interaction.
  5. Corticosteroids: Using corticosteroids concurrently can raise your risk of developing hypokalemia or low potassium levels.
  6. Digoxin: Furosemide may cause hypokalemia or other electrolyte imbalances, exacerbating digoxin's harmful effects on the heart.
  7. Antihypertensive Drugs: Furosemide and other antihypertensive drugs together may have a cumulative effect of decreasing blood pressure.
  8. A Few Anti-Diabetic Drugs: Furosemide may alter blood sugar levels and hinder certain anti-diabetic drugs' effects.
  9. Some Antiepileptic Drugs: The efficacy of certain antiepileptic medications may be diminished by Furosemide.

Before using Furosemide or any other new medication, it is important to inform your doctor about all the vitamins, over-the-counter medications, and prescriptions you are currently taking. This aids in evaluating possible interactions and modifying your treatment plan as necessary. Never change your drug schedule without first talking to your doctor.

Side Effects

Side Effects Prevention What You Should Do
More Common
Dizziness when getting up from a lying or sitting position Get up slowly Inform your doctor or nurse if this bothers you.
Less Common
Blurred vision   Avoid driving if your vision is blurred. Inform your doctor or nurse if this bothers you.
Rare
Easy bruising or bleeding. Black, tar-like stools. Use sharp objects with care. Use a soft toothbrush. Inform your doctor before going to the dentist. Call your doctor immediately if bleeding or bruising is unusual or will not stop, or contact the Emergency Department.
Yellow eyes or skin Your doctor will test your liver function Tell your doctor as soon as possible
Dark frothy urine
Joint pain, loss of balance Check with your doctor or nurse as soon as possible.
Ringing in ears, hearing loss
Skin rash Tell your doctor or nurse if this bothers you.
Signs of Low Potassium What You Should Do
Dry mouth, increase thirst Irregular heartbeat or weak pulse Eat potassium-rich foods
Muscle cramps/pain Unusual tiredness Contact your doctor if these symptoms persist or if they become severe.
Nausea and vomiting Your doctor may order a potassium medicine.

What the Patient Should Know

Potassium can be lost from the body when taking this medicine. You can raise the amount of potassium in your body by consuming foods high in potassium, like oranges, bananas, or orange juice, or by taking a potassium supplement (as directed by your physician). Your dietician can assist you in selecting alternative foods high in potassium.

When you wake up in the morning, you may feel lightheaded or dizzy. Sit or lie down, then gently get to your feet. Dizziness may worsen in hot weather conditions or after consuming alcohol. Try consuming fewer alcoholic beverages, and steer clear of prolonged standing or sun exposure.

Furosemide may increase your skin's sensitivity to sunlight. Avoid the sun as much as you can. Wear eyewear and protective clothes, and apply sunscreen cream with an SPF of 30 or higher.

Take the missed dose of this medication as soon as you remember. Don't give yourself two doses, though, if it's time for the next dose.

Keep this medication out of children's reach and in a cold, dry location.

For any details regarding this drug, kindly contact your physician or nurse.

Warnings

Certain circumstances or contraindications dictate when it should not be used. The following are some typical contraindications:

This medicine or any of its parts should not be used by anyone who has shown signs of hypersensitivity or allergic reaction.

Since Lasix depends on urine production to get rid of extra fluid, it is not recommended for people who have anuria.

Lasix can potentially induce electrolyte imbalances, specifically a reduction in potassium levels. People who suffer from severe electrolyte imbalances might have to avoid taking it.

Lasix should be taken cautiously if someone is extremely dehydrated since it may make the condition worse.

The medicine may raise uric acid levels, which may lead to an attack of gout. Those with a history of gout may require special attention or different medicine.

It's possible that Lasix is unsafe to use while nursing or pregnant. In these circumstances, it's crucial to speak with a healthcare professional.

Furosemide should be used cautiously and, in certain situations, should not be used at all by those with specific medical conditions, such as liver disease.

Before taking Furosemide or any other drug, people should make sure their healthcare provider is aware of all of their medical history and current prescriptions. A medical practitioner is the only one who can assess if Furosemide is appropriate given a patient's unique medical circumstances.

Lasix Overdose

Overdosing can have significant side effects and needs to be treated right away. An excess of Furosemide may cause symptoms such as dehydration, hypokalemia, low potassium levels, low blood pressure, fainting, dizziness, lightheadedness, and ototoxicity.

In the event that an individual suspects overdosing or encounters adverse severe effects following Lasix administration, prompt emergency medical treatment should be sought. Depending on the overdose intensity and the symptoms, a specific strategy will be chosen.

How to Keep Lasix

It should be kept at room temperature. Steer clear of the sun and extremely hot weather.

It should be stored dry. It is advisable to store medication in a container with a tight lid because moisture can alter the medication's stability.

If you have kids or pets at home, keep Lasix out of reach and in a childproof container to avoid unintentional ingestion. For future reference, preserve the drug information and any instructions or patient pamphlets that the pharmacist or healthcare provider may have provided.

Verify the medication's expiration date on the container. Furosemide should not be used after the expiration date as it might not work as intended and might even be dangerous.

Medically reviewed by
Jennifer Bowles
Pharmacologist
Updated August 11, 2026

Customer questions

Asked by Maria Gonzalez, San Jose, United States

My furosemide order just arrived. Which details should I check to make sure I received the strength I selected?

Answered by Support team

Check the package label for "furosemide," the strength in mg, and "tablets" as the dosage form. Also compare the manufacturer name, lot number, expiration date, and tablet imprint when one is present; do not use the tablets if the ingredient, strength, or dosage form does not match your order.

Asked by David Miller, Chicago, United States

I used furosemide liquid before. What form do you sell here?

Answered by Support team

This listing is for oral furosemide tablets only, in 40 mg and 100 mg strengths. It does not represent a liquid or injectable product.

Asked by Ethan Parker, Seattle, United States

I have been taking Lasix in the United States. Can I switch to these furosemide tablets?

Answered by Support team

A switch can only be considered if the active ingredient, strength, and oral tablet form match your prescription. The manufacturer, tablet appearance, packaging, and inactive ingredients may differ, so compare those details on the label rather than relying on the Lasix name alone.

Asked by Danielle Robinson, Columbus, United States

I found a generic furosemide offer at another online store for about half the price. Why should I order from PocketDrugGuide instead?

Answered by Support team

We stand behind the quality of the generic products we offer. We cannot verify what another seller supplies, how it is sourced or handled, or whether a similarly named, lower-priced item is truly equivalent; only you can decide whether the savings are worth accepting that unknown risk.

Asked by Kevin Thompson, San Diego, United States

I take furosemide for swelling and sometimes use ibuprofen for back pain. Is that a problem?

Answered by Support team
Medical reviewed by Lynette Ellis

NSAIDs such as ibuprofen can reduce furosemide's diuretic and blood pressure effects and may increase kidney risk, especially with dehydration, heart failure, or kidney disease. Ask the clinician who manages your furosemide before using ibuprofen regularly or at high doses.

Product specifications

Active ingredientFurosemide
Drug classLoop diuretic
Dosage formTablets
Available strengths40 mg, 100 mg
RouteOral
StorageStore at 68°F to 77°F; excursions permitted to 59°F to 86°F. Protect from light and keep the container tightly closed.
ATC codeC03CA01

Regulatory information

United States: Lasix status
Prescription statusFurosemide tablets are prescription drugs in the United States.
Product-status clarificationFDA approval for the exact Lasix 100 mg tablet presentation has not been confirmed in available official records.
Safety monitoringSuspected serious adverse events or product-quality problems may be reported to the FDA MedWatch program.

More information