bumetanide vs furosemide
Side-by-side comparison of bumetanide and furosemide Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Bumex
Lasix
Bumetanide is a water pill (diuretic). It helps your body get rid of extra water and salt.
Furosemide is a water pill (diuretic). It helps your body get rid of extra water and salt.
This medicine treats swelling (edema) caused by heart failure, liver problems, or kidney problems. It helps your body get rid of extra fluid. If you are allergic to furosemide, you may be able to take bumetanide instead.
This medicine treats swelling (edema) from heart failure, liver problems, or kidney disease. It can also treat high blood pressure. Furosemide is helpful when you need a stronger diuretic.
Bumetanide works in your kidneys to increase the amount of salt and water that you pass in your urine. This helps to lower the amount of fluid in your body. It starts working quickly and does not last very long.
Furosemide works in your kidneys. It helps your kidneys remove more salt and water from your blood. This lowers the amount of fluid in your body and lowers blood pressure.
- • Muscle cramps
- • Dizziness
- • Low blood pressure
- • Headache
- • Nausea
- • Dizziness
- • Headache
- • Blurred vision
- • Nausea
- • Vomiting
- Shortness of breath 2,494
- Sudden kidney damage 1,657
- Death 1,642
- Tiredness 1,638
- Diarrhea 1,474
- Difficulty breathing 29,099
- Tiredness 20,389
- Diarrhea 19,940
- Feeling sick to your stomach 18,682
- Sudden kidney damage 18,530
Bumetanide is a strong diuretic. If you take too much, it can cause you to lose too much water and electrolytes. You need to be carefully watched by your doctor, and your dose needs to be adjusted to fit your needs.
Furosemide can cause you to lose too much fluid and electrolytes. This can lead to dehydration, low blood pressure, and kidney problems. Your doctor should check your blood regularly while you are taking this medicine.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if bumetanide will harm your unborn baby. Talk to your doctor about the risks and benefits of taking bumetanide during pregnancy or while breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. Furosemide may not be safe during pregnancy. Talk to your doctor about the risks and benefits of taking this medicine while breastfeeding.
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How to Read This bumetanide vs furosemide Comparison
bumetanide is classified in the Loop Diuretic drug class, while furosemide sits within the Loop Diuretic class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, bumetanide has 8,905 submissions while furosemide has 106,640. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between bumetanide and furosemide — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.