Lasix (Furosemide)
4.82 / 361

Lasix (Furosemide)

4.82 / 361

Lasix and its generic Furosemide are among the most widely used diuretics. This medicine has many benefits, making it popular among both doctors and patients.

High effectiveness is one of the most significant advantages of Lasix tablets. The medicine begins to work quickly, reducing swelling and lowering blood pressure. And it retains its effect around the clock with regular pill intake. Its fast action, wide range of uses, and ability to reduce stress on the heart make Lasix a valuable medical tool.

Lasix Generic

Drug Info

  • Brand Names: Lasix, Frasix, Frusenex;
  • Active Ingredient: Furosemide;
  • Manufacturer: Sanofi.

Lasix and its drug substance Furosemide

Lasix and Furosemide belong to loop diuretics. The main effect of these drugs is aimed at the loop of Henle, which plays a critical role in regulating water and electrolyte balance in the body.

When the medicine gets into the blood, it blocks the Na–K–2CI cotransporter in one part of the loop of Henle, slowing down the reabsorption of sodium and chlorine. This leads to a number of biochemical and hemodynamic changes, such as:

  • Increased urine output;
  • Decreased volume of fluid in the body;
  • Reduced swelling and/or blood pressure.

As a result of fast Furosemide (Lasix) absorption in the gastrointestinal tract, you usually see its effect within 45 - 60 minutes after administration. This makes it a helpful tool in treating various medical conditions associated with fluid retention in the body.

Indications for use

Lasix is useful for relieving various conditions, including those associated with water retention in the tissues and systems of the body. It has many benefits in treating those with hypertension and edema.

The drug reduces blood pressure and maintains it at a safe level. This helps prevent dangerous conditions like heart attacks, strokes, and kidney or other body organ problems.

Lasix diuretic is effective in the treatment of edema, including those caused by conditions such as:

  • Nephrotic syndrome;
  • Hypertensive crisis;
  • Liver diseases;
  • Chronic and/or acute renal failure;
  • Chronic and/or acute heart failure.

Treatment regimens and dosages

The normal dose of Lasix is individual for each patient, considering their condition, age, response to treatment, use of other medications, and disease characteristics.

Hypertension treatment:

  • Standard single dose: 20 - 40 mg;
  • Frequency of use: twice a day.

Swelling treatment:

  • Treating moderate swelling requires 20 - 40 mg a day;
  • For severe swelling, the dosage is individual.

For children, the dosage is calculated based on their age and body weight. Consult your doctor to determine your dosage.

Recommendations for use

Before Lasix medication, you should consult a doctor. The doctor will determine your dose based on your medical conditions and body characteristics. Remember that following the recommendations is the key to the safe and effective use of diuretics.

Follow these rules so that your treatment is right and lead to improved health:

  • Unless prescribed otherwise, avoid taking Lasix before sleep to reduce the frequency of night urination and prevent sleep disturbance;
  • Stick to a regular dosing schedule. This will help maintain a stable level of the drug in the body and ensure maximum effectiveness;
  • Take Lasix tablets whole with a glass of water;
  • Take the pills at about the same time;
  • Follow the doctor's advice regarding diet, fluid and salt intake.

Missed Dose

Doses that are too low or too high can be dangerous. If you miss a dose, take it as soon as you remember. However, if it is almost time for your next tablet, skip the missed dose and return to your regular dosing schedule.


Use Lasix 40 mg, 80 mg, or 100 mg with caution under the following conditions:

  • Uric acid gout;
  • Lupus;
  • Difficulty urinating;
  • Some kidney diseases;
  • Diabetes;
  • Porphyria (rare hereditary disorder);
  • Narrow blood vessels in the heart or brain;
  • High blood protein;
  • Low blood pressure;
  • Liver diseases;
  • Enlarged prostate gland.

If you use Lasix for hypertension, you should regularly measure your blood pressure at home or visit a doctor for monitoring. This will help ensure the treatment's effectiveness and the timely detection of changes in blood pressure.

Diuretics can affect the levels of potassium, sodium, and other electrolytes in the body. You should control your diet and make sure you're getting enough potassium. Follow recommendations for salt and fluid intake.

Use of Lasix during pregnancy

Only a doctor should decide on using diuretics during pregnancy. The doctor will assess the risks and benefits for both mother and child and choose the most appropriate drug and dosage.

Avoid Lasix tablets or injections if you are pregnant or suspect pregnancy. However, in some cases, it may be necessary to use diuretics to manage certain medical conditions during pregnancy.

Pregnant women taking diuretics should monitor their health and report any unusual symptoms to the doctor.

Possible Lasix side effects

Although loop diuretics, including Lasix, have a safer side effect profile (less frequent hypokalemia and hyponatremia) than thiazide diuretics, you may have adverse reactions during treatment.

The treatment involves some risks, including:

  • Arrhythmia;
  • Nausea;
  • Headache;
  • Changes in the blood salt balance;
  • Too little fluid in the blood;
  • Too low blood pressure;
  • Hearing impairment (when using high doses).

Lasix (Furosemide) increases urination, leading to dehydration. It is especially the case if you use the wrong dose of the drug or need to drink more water. You should monitor fluid levels and increase water consumption to prevent dehydration.

If you see any unusual adverse reactions to Lasix, such as loss of energy, muscle pain and tension, or increased heart rate, inform your doctor. These symptoms may indicate a loss of essential electrolytes. You may need to take electrolytes, such as through dietary supplements.

Lasix: interaction with other drugs

The active pharmaceutical ingredient Furosemide may interact with some substances and medicines, changing their pharmaceutical properties or causing adverse reactions. A doctor should determine the possibility of combining medications in each particular case.

Lasix may interact with the following medicines:

  • Drugs affecting blood potassium levels;
  • Non-steroidal anti-inflammatory painkillers;
  • Aminoglycosides;
  • Medicines for treating irregular heart rhythm or those causing irregular heartbeats;
  • Some drugs used to treat mental disorders (lithium, Amisulpride);
  • Medications for hypertension or those that decrease blood pressure.

This is not a complete list. Other medicines and substances may also cause drug interactions. Consult a doctor or pharmacist before taking any other medicines or herbal supplements.


Avoid exposing the packaging to sunlight, high temperature, and humidity. Store the pills at room temperature out of the reach of children.

Where to buy the diuretic Lasix

Our online pharmacy is an excellent way to quickly and safely buy Lasix online. Our customers get a number of advantages, such as:

  • Saving money. Ordering medications online saves both time and money. We have the best diuretics and are ready to sell them at low prices. Our promotions and discounts make buying medicines more affordable;
  • Fast delivery. We value the time of our customers and make it our goal to deliver parcels as quickly as possible;
  • Wide range of products. We offer a wide range of medicines and health products. You can easily find not only common medications but also rare or specialized drugs that are not always available in regular drugstores;
  • Price and product comparison. At our online pharmacy, you can easily compare drug prices and characteristics, which helps you make an informed choice. You can consider different brands and dosage forms, read reviews, and select the most suitable product;
  • Convenience and availability. You no longer need to waste time going to the nearest drugstore and standing in line. We are available 24/7, so you can place an order at any time convenient to you.

Please ask our customer service consultant if you have any questions about buying Lasix pills online.

  • Karen Coleman

    Since childhood, I have suffered from heart and kidney failure. Recently, the situation has worsened, and I needed comprehensive treatment. Lasix was just one of many drugs on my list. In my experience, it is a good diuretic without side effects.

  • Bett Hernandez

    I took this medication under strict medical supervision because I am diabetic. Minimal dosage for three days was enough to deal with my edema. After taking the drug, there was nausea and a headache. But I endured it, as the treatment was short.

  • Lucy Bryant

    This drug was supposed to help me control my blood pressure and manage the edema in my feet. The medication gave me headaches and made my eyes very dry. Idk I probably had to consume more water. So what are the outcomes? The medication did not improve my blood pressure, but it did assist with the edema.

  • Matt Moore

    I had severe pneumonia, and after overcoming the disease, I faced another problem – swelling in my legs. I have been taking Lasix for a week now. And it makes me sweat and pee like a horse. Edema is gradually subsiding.

  • Naomi Phillips

    I didn't have proper results until I got the maximum dosage. I also have insulin resistance/metabolic syndrome, which might be a factor. I started with 10 mg as needed, then had to go to 20mg daily. Then, it reached 40mg daily. Finally, I felt normal, and my swelling was gone.

  • Edgar Lopez

    Pitting edema has affected my entire body. It turned out that I also have RLS (restless leg syndrome). I do get a few slight headaches after taking Lasix. But it's worth it. When you're swelled as a balloon one day and then unswollen in 24 hours, it's fantastic. Headache is nothing compared to the drug's effect.

  • Mary Jenkins

    I couldn't cope with the side effects. The doctor advised me to keep taking Lasix because of my heart failure. But I just can't go to the bathroom every 20 minutes. It is too much for me.

  • Bolton Hill

    A month ago, I experienced a strange systemic inflammation that caused edema. I felt terrible, was in pain, and looked terrible. This drug got me back on my feet in 3 days. However, I still don't know the reason for my condition. Doctors have no idea.

  • Martin Edison

    The drug works as it should. I recommend taking it in the morning so it won't wake you up at night because of the urge to urinate. The only side effect I had was a headache (not severe).

  • Cole Turner

    It's my second try with Lasix. The first one was not that successful, probably due to the 20mg dose, which was not enough for my severe condition. I was weeing a lot, but it didn't help much with the edema. I hope things will be better with 40 mg daily.

  • Robert Boyle

    I've been taking these tablets for seven days and can't stand it anymore. I go to the toilet every 10 mins. Sometimes, I just sit there since I know I'll have to go again soon. This is not what I had in mind when I agreed on this therapy.

  • Baldwin O'Connell

    I suffered from Lymphadima and venous edema and was prescribed 40mg of Lasix to deal with my condition. All in all, I'm satisfied. Be ready to pee every 3o minutes if you have severe conditions like mine.

  • Nora Dickens

    This medication is not for me! At the end of the first week, I developed arrhythmia, and my blood pressure dropped significantly. Be careful.

  • Tina Kramer

    I take these pills to get rid of severe peripheral edema. Swelling is concentrated in the abdomen, feet, and ankles. The doctor gave me a dosage of 40 milligrams a day. It's been five days, but I don't feel the wow effect. I'm still in pain. My doctor says I should wait for better results.

  • Ema Green

    I have had kidney failure since childhood, so edema is my constant "companion." The situation is aggravated by the fact that I have a sitting job. However, it is good that the swelling is small, and a minimum drug dose can help. Sometimes, the pills make me nauseous. So, it is better to use it only if you have a prescription.

  • Alex Myers

    The medication helped me to cope with edema after removing the stone from the kidney. Great credit to the doctor. He constantly corrected the dose, and I was regularly tested. I advise the drug only if you are treated under medical supervision.

  • Grace Finn

    I use the med rather often to stabilize my AD. It works within 45 minutes and never fails. The only side effect I had was a headache.

  • Steve Edwards

    Hi everyone. I have a rather rare condition called Venous Insufficiency. All you need to know is that I have constant problems with swelling in my legs. And Lasix saved me from being in the hospital most of my life, to say the least. It really causes very frequent urination. Be ready for it.

  • Abbott Fox

    Due to my renal failure, sometimes I face horrible swelling in my feet. Lasix makes me walk without pain again. I usually need a day to get rid of extra fluid. My daily dose is 40 mg. However, I can only take it after work cause the pill gives me relatively strong nausea.

  • Uma Swan

    I live with CHF for a while; it causes fluid buildup in my body, and my weight is around 400 lbs. Sometimes, things are so bad that I have to take special meds to get rid of swellings. I tried Lasix for 3 weeks. So far, my results have been excellent. I have no shortness of breath and lost around 50 lbs ( it all was fluid!!).

  • Mia Miller

    The med didn't do much for me. I went to the toilet really often, but my swelling hasn't become any smaller. Such a pity.

  • Bob Johnson

    My diagnosis is bilateral edema. The first try with Lasix was not successful due to dosage. The standard daily dosage was not effective for me. Luckily, my doc understood I needed more and prescribed 40 mg twice a day. After that, I felt improvements. Be sure your dosage is correct before drawing any conclusions.

  • Winter Cobbs

    I took Lasix for nephrotic syndrome. My kidneys have worked much better since I took the pills. The tablets reduce swelling and normalize blood pressure; they never fail if you take them regularly.

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