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Product Overview

Furosemide (generic Lasix)

  • What is furosemide?
    Furosemide (generic Lasix) is a prescription medication used to treat high blood pressure and edema (fluid retention) associated with congestive heart failure, cirrhosis of the liver, and kidney disease. Furosemide is most effective when taken as a supplemental treatment alongside diet and exercise.

    Looking for a safe, effective way to help get your blood pressure under control? Talk to your doctor about whether furosemide may be right for you.

  • What are the most common side effects of furosemide?
    While adverse reactions to furosemide are uncommon, some patients who take the drug may experience mild side effects, including diarrhea, constipation, headache, frequent urination, and blurred vision.

    Rare, more serious adverse events have been known to occur, including kidney failure and electrolyte imbalances; close follow up and lab monitoring with your clinician can reduce the risk of these dramatically. If you are concerned that furosemide may be causing you to experience any number of adverse effects, please contact your doctor.

    This is not a complete list of side effects. If you are concerned about additional side effects, please contact your provider directly.

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Medically Reviewed By Dr. Allison Edwards, MD

Frequently asked questions about Furosemide

What is furosemide?

Furosemide is a prescription medication used to treat high blood pressure and edema (fluid retention) associated with congestive heart failure, cirrhosis of the liver, and kidney disease. Furosemide is most effective when taken as a supplemental treatment alongside diet and exercise.

If left untreated, high blood pressure can damage many parts of the body including the heart, brain, blood vessels, and kidneys. This can result in many dangerous issues, such as heart disease, heart failure, heart attack, stroke, vision loss, and kidney failure.

What is furosemide used to treat?

Furosemide is used to treat high blood pressure and edema (fluid retention). Though furosemide helps treat these conditions, it does not cure them. This medication may be prescribed to treat other issues, so ask your doctor if furosemide is right for you.

To ensure this medication is safe for you, tell your doctor if you have:

Heart disease High blood pressure Heart rhythm disorder Liver disease Kidney disease Diabetes, gout, or systemic lupus erythematosus (SLE) An electrolyte imbalance (such as low levels of potassium or magnesium in your blood) A thyroid disorder A breathing disorder such as asthma or emphysema An allergy to sulfa drugs Are pregnant, breastfeeding, or planning to become pregnant

How does furosemide work?

Furosemide is a diuretic, a kind of drug that combats high blood pressure and fluid retention by causing your body to produce more urine. While stimulating urine production is good for lowering blood pressure and expelling excess liquids, it can also cause you to experience electrolyte imbalances and low blood pressure. If you experience weakness, confusion, or unusual or prolonged dizziness, you should contact your doctor immediately.

What are the most common side effects of furosemide?

While adverse reactions to furosemide are uncommon, some patients who take the drug may experience mild side effects, including diarrhea, constipation, headache, frequent urination, and blurred vision. If your symptoms become severe or do not go away, tell your doctor. In some cases, more severe side effects can be serious. Seek immediate medical attention if you experience any of the following after taking furosemide: Blisters or peeling skin Rash or hives Fever Ringing of the ears Jaundice of the skin or eyes Difficulty breathing or swallowing Loss of hearing This is not a complete list of side effects. For more information on adverse reactions you may experience while taking furosemide, please visit the National Institutes of Health’s DailyMed webpage.

How long does it take for furosemide to work?

Furosemide will begin to take effect within 1 to 2 hours of your dose and will generally last for 6 to 8 hours. Make sure to take furosemide exactly as your doctor prescribed. Speak to your doctor before stopping your use of furosemide.

What is the typical starting dose of furosemide?

The typical starting dose for adults is 20 to 80 mg given in a single dose. For children, the initial dose is 2 mg per kilogram of body weight, given as a single dose. Your doctor may want to keep track of your blood pressure while you’re taking furosemide.

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up for the missed dose.

Can I get furosemide over-the-counter?

Furosemide is currently only available via prescription. This means the use of this drug must be authorized by a licensed health care provider.

Providers on Sesame can write a prescription – or refill an existing one – during a virtual or in-person visit. Depending on the medication, you can arrange for same-day pickup at a pharmacy near you or order the medication to be delivered to your door for just $5. Book an online consultation with a real, licensed provider on Sesame today to determine whether or not furosemide is right for you.

Note that all prescriptions are at the discretion of your health care provider. Providers on Sesame cannot prescribe controlled substances.

Can I get furosemide online?

Yes! Sesame offers a fully integrated prescription service, which means you can get the medication you need delivered right to your door, starting at just $5 a month.

Talk to a provider on Sesame and get your online doctor prescription or refill ordered right away for fast and convenient pickup from a pharmacy of your choice.

Note that all prescriptions are at the discretion of your clinician.

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