Lasix Side Effects
Generic name: furosemide
Medically reviewed by Drugs.com. Last updated on Apr 27, 2023.
Note: This document contains side effect information about furosemide. Some dosage forms listed on this page may not apply to the brand name Lasix.
For Healthcare Professionals
Applies to furosemide: compounding powder, injectable solution, intravenous solution, oral liquid, oral solution, oral tablet, subcutaneous kit.
Metabolic
Common (1% to 10%): Hyponatremia, hypochloremia, hypokalemia, blood cholesterol increased, blood uric acid increased, gout
Uncommon (0.1% to 1%): Thirst, glucose tolerance decreased
Rare (0.01% to 0.1%): Anorexia, serum triglycerides increased
Frequency not reported: Hyperglycemia, diabetes mellitus, hyperuricemia, metabolic alkalosis, hypocalcemia, hypomagnesemia, hypovolemia, dehydration, tetany, serum potassium decreased, Pseudo-Bartter syndrome, electrolyte disturbances, serum calcium decreased[Ref]
Hematologic
Common (1% to 10%): Hemoconcentration
Uncommon (0.1% to 1%): Thrombocytopenia
Rare (0.01% to 0.1%): Eosinophilia, leukopenia, bone marrow depression
Very rare (less than 0.01%): Hemolytic anemia, aplastic anemia, agranulocytosis
Frequency not reported: Anemia, thrombophilia[Ref]
Genitourinary
Common (1% to 10%): Urine volume increased
Frequency not reported: Glycosuria, bladder spasm, urinary retention, urinary incontinence[Ref]
Dermatologic
Uncommon (0.1% to 1%): Pruritus, bullous exanthema, rash, urticaria, purpura, erythema multiforme, exfoliative dermatitis, photosensitivity
Rare (less than 0.1%): Lyell's syndrome and Stevens-Johnson syndrome, acute generalized exanthematous pustulosis, drug rash with eosinophilia and systemic symptoms
Frequency not reported: Toxic epidermal necrolysis, bullous pemphigoid, sweating[Ref]
Gastrointestinal
Uncommon (0.1% to 1%): Dry mouth, nausea, bowel motility disturbances, vomiting, diarrhea, constipation
Rare (less than 0.1%): Gastric distress, acute pancreatitis
Frequency not reported: Pancreatitis, oral and gastric irritation, cramping[Ref]
Renal
Uncommon (0.1% to 1%): Blood creatinine increased, urea increased
Rare (less than 0.1%): Interstitial nephritis, acute renal failure
Frequency not reported: Nephrocalcinosis in premature infants, nephrolithiasis in premature infants, GFR decreased, tubulointerstitial nephritis[Ref]
Other
Uncommon (0.1% to 1%): Deafness, fatigue
Rare (less than 0.1%): Sensation of pressure in the head, dysacusis, asthenia, fever, febrile conditions, malaise
Frequency not reported: Weakness, sudden death, hearing disorders, hearing loss, paradoxical swelling[Ref]
Cardiovascular
Uncommon (0.1% to 1%): Cardiac arrhythmia
Rare (less than 0.1%): Vasculitis
Frequency not reported: Systemic vasculitis, necrotizing angiitis, orthostatic hypotension, thrombophlebitis, acute hypotension, circulatory collapse, persistent patent ductus arteriosus during the first few weeks of life in premature infants with respiratory distress syndrome, blood pressure decreased, shock, hypotension, thrombosis, orthostatic blood pressure decreased[Ref]
Ocular
Uncommon (0.1% to 1%): Visual disturbance
Rare (less than 0.1%): Myopia aggravated, blurred vision
Frequency not reported: Blurred vision, xanthopsia[Ref]
Nervous system
Rare (0.01% to 0.1%): Paresthesia, vertigo, dizziness, sleepiness, tinnitus, hyperosmolar coma
Frequency not reported: Hepatic encephalopathy, headache, fainting and loss of consciousness, drowsiness, lethargy, sweet taste[Ref]
Musculoskeletal
Rare (less than 0.1%): Lupus erythematosus activation or exacerbation, leg muscle cramps, chronic arthritis
Frequency not reported: Muscle spasm, rhabdomyolysis[Ref]
Immunologic
Rare (less than 0.1%): Severe anaphylactic or anaphylactoid reactions
Frequency not reported: Allergic reactions[Ref]
Hepatic
Very rare (less than 0.01%): Jaundice, hepatic ischemia, liver enzymes increased
Frequency not reported: Abnormal hepatic function, cholestasis, bile flow increased, biliary tree distended[Ref]
Psychiatric
Frequency not reported: Restlessness, psychiatric disorder, apathy[Ref]
Frequently asked questions
- Should you drink a lot of water when taking Lasix?
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- How long after taking Lasix would you expect to urinate?
- Can you take Lasix for weight loss?
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References
1. Product Information. Lasix (furosemide). sanofi-aventis. 2007;PROD.
2. Cerner Multum, Inc. UK Summary of Product Characteristics.
3. Cerner Multum, Inc. Australian Product Information.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.