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This page presents data from the FDA Adverse Event Reporting System (FAERS) and the FDA-approved drug label. A report submitted to FAERS does not prove a drug caused the reported event. Always consult a healthcare provider about medications.

Furosemide

loop diuretic
Last updated: June 17, 2026
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Furosemide is a medication, a loop diuretic. According to the FDA-approved label, Edema Furosemide tablets are indicated in adults and pediatric patients for the treatment of edema associated with congestive heart failure, cirrhosis of the liver, and renal disease, including the nephrotic syndrome. FAERS contains 392,819 submissions naming this drug from 1997 through 2026; the top three reactions cited are dyspnoea, fatigue, and diarrhoea.

Most-Reported Reactions

Counts of the reactions most often cited in FAERS submissions that named Furosemide. Inclusion here does not establish causation - submitters describe what was observed, not what was confirmed. One submission can list several reactions, so the totals exceed the report count.

DYSPNOEA 29,493 (7.5%) FATIGUE 20,724 (5.3%) DIARRHOEA 20,249 (5.2%) NAUSEA 18,965 (4.8%) ACUTE KIDNEY INJURY 18,757 (4.8%) DEATH 18,531 (4.7%) FALL 16,321 (4.2%) PNEUMONIA 16,244 (4.1%) ASTHENIA 15,337 (3.9%) DIZZINESS 14,959 (3.8%) HYPOTENSION 14,928 (3.8%) DRUG INEFFECTIVE 14,596 (3.7%) OFF LABEL USE 14,449 (3.7%) PAIN 13,710 (3.5%) HEADACHE 13,222 (3.4%)

Patient Demographics

Patient sex and age across the FAERS submissions that named Furosemide. Percentages here are computed only from submissions where these fields were filled in - many leave them blank.

By Sex

Female Male Unknown

By Age Group

0-17 18-44 45-64 65+

Severity Outcomes

Severity flags recorded across the 392,819 FAERS submissions that named Furosemide. Each bar shows the count of those reports carrying that flag. A single case can carry more than one (a hospitalization that became life-threatening, for example), so these bars are independent rates - they don't sum to 100%. Inclusion of a case under any flag does not establish that the drug caused the outcome.

DEATH 61,231 (15.6%) HOSPITALIZATION 192,941 (49.1%) LIFE-THREATENING 25,534 (6.5%) DISABLING 10,184 (2.6%)

Submissions Per Quarter

Quarterly count of FAERS submissions that named Furosemide. Ups and downs on this chart can track prescribing volume, news cycles, or shifts in how reports get filed, rather than the drug becoming safer or more dangerous.

1997 1998 1999 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

From the FDA-Approved Label

Excerpts from the official FDA-approved prescribing information for Furosemide. This is the authoritative source on indications, warnings, and known adverse reactions.

Indications

Edema Furosemide tablets are indicated in adults and pediatric patients for the treatment of edema associated with congestive heart failure, cirrhosis of the liver, and renal disease, including the nephrotic syndrome. Furosemide tablets are particularly useful when an agent with greater diuretic potential is desired. Hypertension Oral furosemide may be used in adults for the treatment of hypertension alone or in combination with other antihypertensive agents. Hypertensive patients who cannot be adequately controlled with thiazides will probably also not be adequately controlled with furosemide alone. Edema Furosemide tablets are indicated in adults and pediatric patients for the treatment of edema associated with congestive heart failure, cirrhosis of the liver, and renal disease, including the nephrotic syndrome. Furosemide tablets are particularly useful when an agent with greater diuretic potential is desired. Hypertension Oral furosemide may be used in adults for the treatment of hypertension alone or in combination with other antihypertensive agents. Hypertensive patients who cannot be adequately controlled with thiazides will probably also not be adequately controlled with ...

Warnings

Furosemide is a potent diuretic which, if given in excessive amounts, can lead to a profound diuresis with water and electrolyte depletion. Therefore, careful medical supervision is required and dose and dose schedule must be adjusted to the individual patient's needs (see DOSAGE AND ADMINISTRATION ). WARNINGS In patients with hepatic cirrhosis and ascites, furosemide therapy is best initiated in the hospital. In hepatic coma and in states of electrolyte depletion, therapy should not be instituted until the basic condition is improved. Sudden alterations of fluid and electrolyte balance in patients with cirrhosis may precipitate hepatic coma; therefore, strict observation is necessary during the period of diuresis. Supplemental potassium chloride and, if required, an aldosterone antagonist are helpful in preventing hypokalemia and metabolic alkalosis. If increasing azotemia and oliguria occur during treatment of severe progressive renal disease, furosemide should be discontinued. Cases of tinnitus and reversible or irreversible hearing impairment and deafness have been reported. Reports usually indicate that furosemide ototoxicity is associated with rapid injection, severe renal i...

Adverse Reactions (from label)

are categorized below by organ system and listed by decreasing severity. Gastrointestinal System Reactions 1. hepatic encephalopathy in patients with hepatocellular insufficiency 2. pancreatitis 3. jaundice (intrahepatic cholestatic jaundice) 4. increased liver enzymes 5. anorexia 6. oral and gastric irritation 7. cramping 8. diarrhea 9. constipation 10. nausea 11. vomiting Systemic Hypersensitivity Reactions 1. severe anaphylactic or anaphylactoid reactions (e.g., with shock) 2. systemic vasculitis 3. interstitial nephritis 4. necrotizing angiitis Central Nervous System Reactions 1. tinnitus and hearing loss 2. paresthesias 3. vertigo 4. dizziness 5. headache 6. blurred vision 7. xanthopsia Hematologic Reactions 1. aplastic anemia 2. thrombocytopenia 3. agranulocytosis 4. hemolytic anemia 5. leukopenia 6. anemia 7. eosinophilia Dermatologic-Hypersensitivity Reactions 1. toxic epidermal necrolysis 2. Stevens-Johnson Syndrome 3. erythema multiforme 4. drug rash with eosinophilia and systemic symptoms 5. acute generalized exanthematous pustulosis 6. exfoliative dermatitis 7. bullous pemphigoid 8. purpura 9. photosensitivity 10. rash 11. pruritus 12. (continues in label)

FDA label effective date: 2023-03-01

Disclaimer

AdverseEvent.ai is not affiliated with the FDA. Adverse-event counts come from the FDA Adverse Event Reporting System (FAERS). Drug labels come from the FDA drug label dataset. A report submitted to FAERS does not prove a drug caused the reported event — always consult a healthcare provider about medications. This site is for informational purposes only and is not medical advice.