Furosemide (Monograph)
Brand name: Lasix
Drug class: Loop Diuretics
- Loop Diuretics
- Diuretics, Loop
Warning
A standardized concentration for this drug has been established through Standardize 4 Safety (S4S), a national patient safety initiative to reduce medication errors, especially during transitions of care. The drug is included in a standard concentration list which may apply to an IV or oral compounded liquid formulation. For additional information, see the ASHP website [Web].
Warning
-
Furosemide is a potent diuretic that given in excessive amounts may induce a profound diuresis with water and electrolyte depletion.133 e Careful medical supervision is required; dosage selection and titration should be adjusted to the individual patient’s needs.133 e (See Dosage and Administration.)
Introduction
A sulfonamide, loop-type diuretic and antihypertensive agent.133 e
Uses for Furosemide
Edema
Management of edema associated with heart failure, hepatic cirrhosis, and renal disease (e.g., nephrotic syndrome).133 e
Considered a diuretic of choice for most patients with heart failure.524
Most experts state that all patients with symptomatic heart failure who have evidence for, or a history of, fluid retention generally should receive diuretic therapy in conjunction with moderate sodium restriction, an agent to inhibit the renin-angiotensin-aldosterone (RAA) system (e.g., ACE inhibitor, angiotensin II receptor antagonist, angiotensin receptor-neprilysin inhibitor [ARNI]), a β-adrenergic blocking agent (β-blocker), and in selected patients, an aldosterone antagonist.524 713 800
IV management of acute pulmonary edema (in combination with oxygen and a cardiac glycoside).150
Hypertension
Management of hypertension, alone or in combination with other classes of antihypertensive agents.133 1200
Not considered a preferred agent for initial management of hypertension according to current evidence-based hypertension guidelines; other agents (i.e., ACE inhibitors, angiotensin II receptor antagonists, calcium-channel blockers, thiazide diuretics) are preferred for initial management.501 502 503 504 1200
Some experts state that loop diuretics (e.g., bumetanide, furosemide, torsemide) are preferred over thiazides in patients with moderate to severe chronic kidney disease (CKD)502 504 1200 or symptomatic heart failure.524 1200
Individualize choice of therapy; consider patient characteristics (e.g., age, ethnicity/race, comorbidities, cardiovascular risk) as well as drug-related factors (e.g., ease of administration, availability, adverse effects, cost).501 502 503 504 515 1200 1201
A 2017 ACC/AHA multidisciplinary hypertension guideline classifies BP in adults into 4 categories: normal, elevated, stage 1 hypertension, and stage 2 hypertension.1200 (See Table 1.)
Source: Whelton PK, Carey RM, Aronow WS et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. Hypertension. 2018;71:e13-115.
Individuals with SBP and DBP in 2 different categories (e.g., elevated SBP and normal DBP) should be designated as being in the higher BP category (i.e., elevated BP).
Category |
SBP (mm Hg) |
DBP (mm Hg) |
|
---|---|---|---|
Normal |
<120 |
and |
<80 |
Elevated |
120–129 |
and |
<80 |
Hypertension, Stage 1 |
130–139 |
or |
80–89 |
Hypertension, Stage 2 |
≥140 |
or |
≥90 |
The goal of hypertension management and prevention is to achieve and maintain optimal control of BP.1200 However, the BP thresholds used to define hypertension, the optimum BP threshold at which to initiate antihypertensive drug therapy, and the ideal target BP values remain controversial.501 503 504 505 506 507 508 515 523 526 530 1200 1201 1207 1209 1222 1223 1229
The 2017 ACC/AHA hypertension guideline generally recommends a target BP goal (i.e., BP to achieve with drug therapy and/or nonpharmacologic intervention) of <130/80 mm Hg in all adults regardless of comorbidities or level of atherosclerotic cardiovascular disease (ASCVD) risk.1200 In addition, an SBP goal of <130 mm Hg generally is recommended for noninstitutionalized ambulatory patients ≥65 years of age with an average SBP of ≥130 mm Hg.1200 These BP goals are based upon clinical studies demonstrating continuing reduction of cardiovascular risk at progressively lower levels of SBP.1200 1202 1210
Other hypertension guidelines generally have based target BP goals on age and comorbidities.501 504 536 Guidelines such as those issued by the JNC 8 expert panel generally have targeted a BP goal of <140/90 mm Hg regardless of cardiovascular risk, and have used higher BP thresholds and target BPs in elderly patients501 504 536 compared with those recommended by the 2017 ACC/AHA hypertension guideline.1200
Some clinicians continue to support previous target BPs such as those recommended by JNC 8 due to concerns about the lack of generalizability of data from some clinical trials (e.g., SPRINT study) used to support the 2017 ACC/AHA hypertension guideline and potential harms (e.g., adverse drug effects, costs of therapy) versus benefits of BP lowering in patients at lower risk of cardiovascular disease.1222 1223 1224 1229
Consider potential benefits of hypertension management and drug cost, adverse effects, and risks associated with the use of multiple antihypertensive drugs when deciding a patient's BP treatment goal.1200 1220 1229
For decisions regarding when to initiate drug therapy (BP threshold), the 2017 ACC/AHA hypertension guideline incorporates underlying cardiovascular risk factors.1200 1207 ASCVD risk assessment is recommended by ACC/AHA for all adults with hypertension.1200
ACC/AHA currently recommend initiation of antihypertensive drug therapy in addition to lifestyle/behavioral modifications at an SBP ≥140 mm Hg or DBP ≥90 mm Hg in adults who have no history of cardiovascular disease (i.e., primary prevention) and a low ASCVD risk (10-year risk <10%).1200
For secondary prevention in adults with known cardiovascular disease or for primary prevention in those at higher risk for ASCVD (10-year risk ≥10%), ACC/AHA recommend initiation of antihypertensive drug therapy at an average SBP ≥130 mm Hg or an average DBP ≥80 mm Hg.1200
Adults with hypertension and diabetes mellitus, CKD, or age ≥65 years are assumed to be at high risk for cardiovascular disease; ACC/AHA state that such patients should have antihypertensive drug therapy initiated at a BP ≥130/80 mm Hg.1200 Individualize drug therapy in patients with hypertension and underlying cardiovascular or other risk factors.502 1200
In stage 1 hypertension, experts state that it is reasonable to initiate drug therapy using the stepped-care approach in which one drug is initiated and titrated and other drugs are added sequentially to achieve the target BP.1200 Initiation of antihypertensive therapy with 2 first-line agents from different pharmacologic classes recommended in adults with stage 2 hypertension and average BP >20/10 mm Hg above BP goal.1200
Related/similar drugs
amlodipine, lisinopril, metoprolol, losartan, carvedilol, hydrochlorothiazide, spironolactone
Furosemide Dosage and Administration
General
Edema
-
Careful etiologic diagnosis should precede the use of any diuretic.e
-
Hospitalization of the patient during initiation of therapy is advisable, especially for patients with hepatic cirrhosis and ascites or chronic renal failure.133 e
-
In prolonged diuretic therapy, intermittent use of the drug (e.g., on 2–4 consecutive days each week) may be advisable.e
-
For the management of fluid retention (e.g., edema) associated with heart failure, experts state that diuretics should be administered at a dosage sufficient to achieve optimal volume status and relieve congestion without inducing an excessively rapid reduction in intravascular volume, which could result in hypotension, renal dysfunction, or both.524
Monitoring and BP Treatment Goals
-
Monitor BP regularly (i.e., monthly) during therapy and adjust dosage of the antihypertensive drug until BP controlled.1200
-
If added to regimen of a patient receiving another antihypertensive agent, reduce dosage of preexisting therapy by ≥50% initially to avoid severe hypotension; additional dosage adjustment may be required.133
-
If unacceptable adverse effects occur, discontinue drug and initiate another antihypertensive agent from a different pharmacologic class.1216
-
Assess patient's renal function and electrolytes 2–4 weeks after initiation of diuretic therapy.1200
-
If adequate BP response not achieved with a single antihypertensive agent, either increase dosage of single drug or add a second drug with demonstrated benefit and preferably a complementary mechanism of action (e.g., ACE inhibitor, angiotensin II receptor antagonist, calcium-channel blocker).1200 1216 Many patients will require ≥2 drugs from different pharmacologic classes to achieve BP goal; if goal BP still not achieved with 2 antihypertensive agents, add a third drug.1200 1216 1220
Administration
Administer orally, IV, or IM.133 150
Oral Administration
Administer orally once (preferably in the morning)e or twice daily .133
For ease of administration and maximum dosage flexibility in children, consider use of oral solution preparation.151
IV Administration
For solution and drug compatibility information, see Compatibility under Stability.
IV administration may be used in emergency clinical circumstances when a rapid onset of diuresis is desired, or in patients unable to take oral medication or those with impaired GI absorption; replace with oral therapy as soon as possible.133 150 e
Consider the potential risks, when using large parenteral doses; monitor patient closely.105 107
Dilution
For IV infusion, dilute in 5% dextrose, 0.9% sodium chloride, or lactated Ringer’s injection and adjust pH to >5.5.150 e
Rate of Administration
For direct IV injection, administer slowly over a period of 1–2 minutes.150 e
If high-dose parenteral furosemide therapy is necessary, the manufacturer recommends that the drug be administered as a controlled infusion at a rate not exceeding 4 mg/minute in adults.150 e
Dosage
Individualize dosage according to patient’s requirements and response; titrate dosage to gain maximum therapeutic effect while using the lowest possible effective dosage.e (See Boxed Warning.)
Pediatric Patients
Edema
Oral
2 mg/kg administered as a single dose.103 104 105 107 108 133 If necessary, increase in increments of 1 or 2 mg/kg every 6–8 hours103 104 105 107 108 to a maximum of 6 mg/kg.103 133 Generally not necessary to exceed individual doses of 4 mg/kg or a dosing frequency of once or twice daily.104 Use minimum effective dosage for maintenance therapy.133
IV or IM
1 mg/kg administered as a single IM or IV injection.103 104 105 106 107 108 150 If necessary for resistant forms of edema, the initial dose may be increased by 1 mg/kg103 104 105 108 no more often than every 2 hours until the desired effect has been obtained or up to a maximum dosage of 6 mg/kg.103 Adequate response usually is obtained with individual parenteral doses of 1 mg/kg.104 105 107 108
Acute Pulmonary Edema
IV or IM1 mg/kg administered as a single IM or IV injection.103 104 105 106 107 108 150 If necessary for resistant forms of edema, the initial dose may be increased by 1 mg/kg103 104 105 108 no more often than every 2 hours until the desired effect has been obtained or up to a maximum dosage of 6 mg/kg.103 Adequate response generally obtained with 1 mg/kg.104 105 107 108
Hypertension† [off-label]
Oral
Initially, 0.5–2 mg/kg given once or twice daily.149 Increase as necessary up to a maximum of 6 mg/kg daily.149
Adults
Edema
Oral
20–80 mg given as a single dose, preferably in the morning.133 e If needed, repeat same dose 6–8 hours later or increase dose by 20- to 40-mg increments and give no sooner than 6–8 hours after last dose until desired diuretic response (including weight loss) is obtained.133 e May titrate carefully up to 600 mg daily in severe cases.133
The effective dose may be given once or twice daily thereafter, or, in some cases, by intermittent administration on 2–4 consecutive days each week.133 e Dosage may be reduced for maintenance therapy.e
For management of fluid retention (e.g., edema) associated with heart failure, some experts recommend initiating furosemide at a low dosage (e.g., 20–40 mg once or twice daily) and increasing dosage (maximum 600 mg daily) until urine output increases and weight decreases, generally by 0.5–1 kg daily.524
IV or IM
20–40 mg given as a single IM or IV injection.150 e If needed, repeat same dose 2 hours later or increase dose by 20-mg increments and give no sooner than every 2 hours until the desired diuretic response is obtained.150 Effective dosages may then be given once or twice daily.150
Acute Pulmonary Edema
IV40 mg given as a single IV injection.150 If needed, an 80-mg dose may be given 1 hour after the initial dose.150
Hypertension
Oral
40 mg twice daily.133 If desired BP not attained, consider adding other antihypertensive agents.133
Some experts state that usual dosage range is 20–80 mg daily in 2 divided doses.1200
Prescribing Limits
Pediatric Patients
Edema
Oral
IV or IM
Maximum of 6 mg/kg in infants and children; do not exceed 1 mg/kg daily in premature infants.150
Hypertension† [off-label]
Oral
Maximum 6 mg/kg daily.149
Adults
Edema
Oral
Maximum of 600 mg daily.133 524
Special Populations
Renal Impairment
Higher doses may be required for patients with acute or chronic renal failure.e
Cautions for Furosemide
Contraindications
Warnings/Precautions
Warnings
Hepatic Effects
Sudden alterations of electrolyte balance in patients with cirrhosis may precipitate hepatic coma; use with caution in patients with hepatic cirrhosis and ascites.133
Do not initiate therapy in patients with hepatic coma or electrolyte depletion until the basic condition is improved.133 Therapy in such patients is best initiated in the hospital with careful monitoring of clinical status and electrolyte balance.133
Renal Effects
If increasing azotemia and oliguria occur during treatment of severe progressive renal disease, discontinue the drug.133 150
Sensitivity Reactions
Anaphylaxis
Anaphylaxis (e.g., urticaria, angioedema, hypotension) within 5 minutes after IV administration reported.102
Systemic Lupus Erythematosus
Possible exacerbation or activation of systemic lupus erythematosus.133 150
Sulfonamide Sensitivity
Patients sensitive to sulfonamides may show allergic reactions to furosemide.e
Photosensitivity
Photosensitivity may occur.133
Major Toxicities
Ototoxicity
Risk of tinnitus, reversible or permanent hearing impairment increased following IV or IM administration, especially at high dosages,133 e after too-rapid administration,133 in patients with severely impaired renal function, and/or in patients receiving other ototoxic drugs (e.g., aminoglycosides).133 e (See Specific Drugs under Interactions.)
If high-dose IV therapy is indicated, administer by slow IV infusion (e.g., at a rate not exceeding 4 mg/minute in adults).133 150
General Precautions
Fluid, Electrolyte, and Cardiovascular Effects
Excessive diuresis may cause dehydration and blood volume reduction with circulatory collapse and possibly vascular thrombosis and embolism, particularly in elderly patients.133 (See Boxed Warning.)
Risk of orthostatic hypotension, especially with brisk diuresis.133 150 151 May be aggravated by concomitant use with alcohol, barbiturates, or narcotics.133 151 e
Risk of hypokalemia, especially with brisk diuresis, inadequate oral electrolyte intake, when cirrhosis is present, or during concomitant use of corticosteroids or ACTH.133 150 Concomitant therapy with digitalis may exaggerate metabolic effects of hypokalemia, especially myocardial effects.133 150
Observe carefully for manifestations of fluid and electrolyte depletion (e.g., dryness of mouth, thirst, weakness, lethargy, drowsiness, restlessness, muscle pains or cramps, muscular fatigue, hypotension, oliguria, tachycardia, arrhythmia, nausea, vomiting).133
Endocrine Effects
Possible increased blood glucose and alterations in glucose tolerance tests (with abnormalities of the fasting and 2-hour postprandial sugar); precipitation of diabetes mellitus rarely reported.133 150 Monitor urine and blood glucose concentrations periodically in patients with diabetes and those suspected of latent diabetes.e
Possible hyperuricemia and precipitation of gout;133 150 use with caution in patients with a history of gout or elevated serum uric acid concentrations.e
Patient Monitoring
Monitor regularly for the possible occurrence of blood dyscrasias, liver or kidney damage, or other idiosyncratic reactions.133 150
Serum electrolytes (particularly potassium), CO2, Scr, and BUN should be determined frequently during the first few months of therapy and periodically thereafter.133 150
Elective Surgery
Discontinue therapy 1 week (oral furosemide) or 2 days (parenteral furosemide) before elective surgery.e
Specific Populations
Pregnancy
Category C.133
Lactation
Distributed into milk.133 Use with caution.133
Pediatric Use
Risk of persistent patent ductus arteriosus (PDA) may be increased in premature neonates with respiratory distress syndrome (RDS) who receive furosemide during the first weeks of life.103 e
Do not exceed dosage of 1 mg/kg per 24 hours in premature neonates with <31 weeks’ postconception age (gestational age at birth plus postnatal age); risk of potentially toxic furosemide plasma concentrations with higher dosages.150
Renal calcification reported in severely premature infants treated with IV furosemide for edema due to PDA and hyaline membrane disease; concomitant chlorothiazide therapy may decrease hypercalciuria and dissolve some calculi.150
Hearing loss reported in neonates; possibly secondary to renal immaturity.103 125 126 150
Oral solutions contain sorbitol; high dosages may cause diarrhea in children.e
Hepatic Impairment
Renal Impairment
Common Adverse Effects
Orthostatic hypotension, dizziness, electrolyte imbalance (hyponatremia, hypokalemia, hypochloremia) tinnitus, photosensitivity.133 e
Drug Interactions
Specific Drugs
Drug |
Interaction |
Comments |
---|---|---|
Alcohol |
||
Anticonvulsants (e.g., phenytoin sodium, phenobarbital) |
Possible reduced diuretic effecte |
|
Antidiabetic agents (e.g., insulin, oral agents) |
Possible antagonism of hypoglycemic effect as result of hypokalemia133 |
Observe for possible decreased diabetic control; correct potassium deficit and/or adjust dosage of antidiabetic agente |
Antihypertensive agents |
Additive antihypertensive effect; orthostatic hypotension may occur133 |
Reduce dosage of both drugse Concomitant therapy generally used to therapeutic advantagee |
Barbiturates |
||
Cardiac glycosides (e.g., digoxin) |
Possible electrolyte disturbances (e.g., hypokalemia, hypomagnesemia), increased risk of digitalis toxicity, and/or fatal cardiac arrhythmias e |
Monitor electrolytes; correct hypokalemia e |
Chloral hydrate (no longer commercially available in the US) |
Possible reaction characterized by diaphoresis, flushes, hypertension, and uneasiness in patients with acute MI and heart failuree |
Consider alternate hypnotic drug (e.g., a benzodiazepine) in patients who require IV furosemidee |
Diuretics, loop (e.g., bumetanide, ethacrynic acid, torsemide) |
Share similar diuretic mechanisms e |
No therapeutic rationale for concomitant usee |
Diuretics, potassium- sparing (e.g., amiloride, spironolactone, triamterene) |
Possible reduction in potassium loss 133 |
May be used to therapeutic advantage133 |
Diuretics, thiazides |
Additive diuretic effecte |
Use reduced dosage of furosemide when added to existing diuretic regimene |
Drugs that cause potassium loss (e.g., corticosteroids, corticotropin, amphotericin B) |
||
Indomethacin |
Possible decreased diuretic and natriuretic effect133 |
Monitor closely to determine if desired diuretic and/or hypotensive effect is obtained133 |
Lithium |
Reduced renal clearance of lithium and increased risk of lithium toxicity 133 |
Avoid concomitant use;133 e if concomitant therapy is necessary, monitor for lithium toxicitye |
Narcotics |
||
Neuromuscular blocking agents, nondepolarizing (e.g., atracurium besylate, tubocurarine chloride) |
Potential for prolonged neuromuscular blockadee |
|
Norepinephrine |
Decreased arterial responsive to norepinephrine133 |
Norepinephrine may still be used effectively133 |
NSAIAs |
Possible weight gain and increased Scr, serum potassium concentrations, and BUN (NSAIAs)133 |
|
Ototoxic drugs (e.g., aminoglycoside antibiotics) |
Possible additive ototoxic effect, especially in patients with impaired renal function133 |
Avoid concomitant use except in life-threatening situations133 |
Salicylates (e.g., aspirin) |
Possible transient reductions in Clcr in patient with chronic renal insufficiencye |
Monitor for toxicity133 |
Succinylcholine |
May potentiate action of succinylcholine133 |
|
Sucralfate |
Possible reduced natriuretic and antihypertensive effects133 |
Do not administer simultaneously; separate administration by ≥2 hours133 Observe closely for desired diuretic and/or antihypertensive effect133 |
Uricosuric drugs (probenecid, sulfinpyrazone) |
Possible antagonism of uricosuric effectse |
Monitor serum uric acid concentrationse |
Furosemide Pharmacokinetics
Absorption
Bioavailability
Mean oral bioavailability of furosemide from commercially available tablets and oral solution is 64% and 60%, respectively.133
Commercially available tablets and oral solution are bioequivalent.133
Onset
Following oral administration, onset of diuresis occurs within 30 minutes to 1 hour; maximal effect after 1–2 hours.133 e
Following IV administration, diuresis occurs within 5 minutes and peaks within 20–60 minutes.150 e
Onset of diuresis after IM administration occurs somewhat later than after IV administration.150
Maximum hypotensive effect may not be apparent until after several days of therapy.e
Duration
Diuretic effect persists 6–8 hours following oral administration and approximately 2 hours following IV administration.133 150 e
Food
Food does not appear to affect diuretic effect.e
Special Populations
In patients with severely impaired renal function, the diuretic response may be prolonged.e
Distribution
Extent
Crosses the placenta and is distributed into milk.e
Plasma Protein Binding
Approximately 95% bound to plasma proteins (mainly albumin) in both normal and azotemic patients.133 e
Elimination
Metabolism
Metabolized in the liver to the defurfurylated derivative, 4-chloro-5-sulfamoylanthranilic acid.e
Elimination Route
Rapidly excreted in urine by glomerular filtration and by secretion from the proximal tubule.e
Approximately 50% of an oral dose and 80% of an IV or IM dose are excreted in urine within 24 hours; 69–97% of these amounts is excreted in the first 4 hours.150 e The remainder of the drug is eliminated by nonrenal mechanisms including degradation in the liver and excretion of unchanged drug in the feces.e
Half-life
Biphasic;e terminal half-life is approximately 2 hours.133
Special Populations
Hepatic or renal impairment prolongs the elimination half-life of the drug.e
In patients with marked renal impairment without liver disease, nonrenal clearance is increased to the extent that up to 98% of the drug is cleared within 24 hours.e
Not removed by hemodialysis.133
Stability
Storage
Oral
Solution or Tablets
Tight, light resistant containers at 15–30°C.133 151
Parenteral
Injection
15–30°C; protect from light.150 Discard unused portion.150
Compatibility
Parenteral
Do not mix with strongly acidic solutions (i.e., pH < 5.5), such as those containing ascorbic acid, amrinone, ciprofloxacin, labetalol, tetracycline, milrinone, epinephrine, or norepinephrine, because furosemide may be precipitated.150 e
Solution Compatibilitya
Compatible |
---|
Alcohol 5% and dextrose 5% |
Amino acids 4.25%, dextrose 25% |
Dextrose 5% in Ringer’s injection, lactated |
Dextrose 5% in sodium chloride 0.9% |
Dextrose 5, 10, or 20% in water |
Invert sugar 10% in Electrolyte #1 |
Mannitol 20% |
Ringer’s injection, lactated |
Sodium chloride 0.9% |
Sodium lactate (1/6) M |
Incompatible |
Fructose 10% in water |
Invert sugar 10% in Electrolyte #2 |
Drug Compatibility
Compatible |
---|
Amikacin sulfate |
Aminophylline |
Ampicillin sodium |
Atropine sulfate |
Bumetanide |
Calcium gluconate |
Cefuroxime sodium |
Cimetidine HCl |
Dexamethasone sodium phosphate |
Diamorphine HCl |
Digoxin |
Epinephrine HCl |
Heparin sodium |
Hydrocortisone sodium succinate |
Isosorbide dinitrate |
Kanamycin sulfate |
Lidocaine HCl |
Midazolam HCl |
Meropenem |
Morphine sulfate |
Nitroglycerin |
Penicillin G |
Potassium chloride |
Ranitidine HCl |
Scopolamine butylbromide |
Sodium bicarbonate |
Sulphadimidine |
Theophylline |
Tobramycin sulfate |
Incompatible |
Buprenorphine HCl |
Chlorpromazine HCl |
Diazepam |
Dobutamine HCl |
Erythromycin lactobionate |
Isoproterenol HCl |
Meperidine HCl |
Metoclopramide HCl |
Papaveretum |
Prochlorperazine edisylate |
Promethazine HCl |
Variable |
Amiodarone HCl |
Gentamicin sulfate |
Hydrocortisone sodium succinate |
Verapamil HCl |
Compatible |
---|
Allopurinol sodium |
Amifostine |
Amikacin sulfate |
Amphotericin B cholesteryl sulfate complex |
Aztreonam |
Bivalirudin |
Bleomycin sulfate |
Cefepime HCl |
Ceftazidime |
Cisplatin |
Cladribine |
Cyclophosphamide |
Cytarabine |
Dexmedetomidine HCl |
Docetaxel |
Doxorubicin HCl liposome injection |
Epinephrine HCl |
Etoposide phosphate |
Fentanyl citrate |
Fludarabine phosphate |
Fluorouracil |
Foscarnet sodium |
Granisetron HCl |
Heparin sodium |
Hetastarch in lactated electrolyte injection (Hextend) |
Hydrocortisone sodium succinate |
Hydromorphone HCl |
Indomethacin sodium trihydrate |
Kanamycin sulfate |
Leucovorin calcium |
Linezolid |
Lorazepam |
Melphalan HCl |
Meropenem |
Methotrexate sodium |
Mitomycin |
Nitroglycerin |
Norepinephrine bitartrate |
Paclitaxel |
Piperacillin sodium–tazobactam sodium |
Potassium chloride |
Propofol |
Ranitidine HCl |
Remifentanil HCl |
Sargramostim |
Sodium nitroprusside |
Tacrolimus |
Tirofiban HCl |
Teniposide |
Thiotepa |
Tirofiban |
Tobramycin sulfate |
Vitamin B complex with C |
Incompatible |
Amsacrine |
Azithromycin |
Chlorpromazine HCl |
Ciprofloxacin |
Clarithromycin |
Diltiazem HCl |
Droperidol |
Esmolol HCl |
Fenoldopam mesylate |
Filgrastim |
Fluconazole |
Gatifloxacin |
Gemcitabine HCl |
Gentamicin sulfate |
Hydralazine HCl |
Idarubicin HCl |
Levofloxacin |
Metoclopramide HCl |
Midazolam HCl |
Milrinone lactate |
Nicardipine HCl |
Ondansetron HCl |
Quinidine gluconate |
Thiopental sodium |
Vecuronium bromide |
Vinblastine sulfate |
Vincristine sulfate |
Vinorelbine tartrate |
Variable |
Amiodarone HCl |
Dobutamine HCl |
Dopamine HCl |
Doxorubicin HCl |
Famotidine |
Labetalol HCl |
Meperidine HCl |
Morphine sulfate |
Actions
-
Inhibits primarily the absorption of sodium and chloride not only in the proximal and distal tubules but also in the ascending limb of the loop of Henle.133 e Does not inhibit carbonic anhydrase and is not an aldosterone antagonist.e
-
Mechanism of hypotensive effect not definitively determined but presumed to result from decreased plasma volume.e
-
Induces greater diuresis and electrolyte loss than with thiazides or most other diuretics except ethacrynic acid.e
-
Possesses some renal vasodilator effect; renal vascular resistance decreases and renal blood flow increases following administration.e
Advice to Patients
-
Risks associated with excessive fluid loss or electrolyte imbalance.133
-
Potential for postural hypotension; importance of rising slowly from a seated position.133
-
Importance of discussing dietary measures and supplementation to prevent or correct hypokalemia.133
-
Importance of informing patients with diabetes mellitus that blood glucose and urine glucose concentrations may increase.133 e
-
Importance of informing patients of possible photosensitivity.133 e
-
Importance of informing clinicians of existing or contemplated concomitant therapy, including prescription and OTC drugs (e.g., appetite suppressants, cold remedies) as well as any concomitant illnesses.133 e
-
Importance of women informing clinicians if they are or plan to become pregnant or plan to breast-feed.133 e
-
Importance of informing patients of other important precautionary information.133 e (See Cautions.)
Additional Information
The American Society of Health-System Pharmacists, Inc. represents that the information provided in the accompanying monograph was formulated with a reasonable standard of care, and in conformity with professional standards in the field. Readers are advised that decisions regarding use of drugs are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and that the information contained in the monograph is provided for informational purposes only. The manufacturer’s labeling should be consulted for more detailed information. The American Society of Health-System Pharmacists, Inc. does not endorse or recommend the use of any drug. The information contained in the monograph is not a substitute for medical care.
Preparations
Excipients in commercially available drug preparations may have clinically important effects in some individuals; consult specific product labeling for details.
Please refer to the ASHP Drug Shortages Resource Center for information on shortages of one or more of these preparations.
* available from one or more manufacturer, distributor, and/or repackager by generic (nonproprietary) name
Routes |
Dosage Forms |
Strengths |
Brand Names |
Manufacturer |
---|---|---|---|---|
Oral |
Solution |
40 mg/5 mL* |
Furosemide Solution |
|
10 mg/mL* |
Furosemide Solution |
|||
Tablets |
20 mg* |
Furosemide Tablets |
||
Lasix |
Sanofi-Aventis |
|||
40 mg* |
Furosemide Tablets |
|||
Lasix (scored) |
Sanofi-Aventis |
|||
80 mg* |
Furosemide Tablets |
|||
Lasix |
Sanofi-Aventis |
|||
Parenteral |
Injection |
10 mg/mL* |
Furosemide Injection |
AHFS DI Essentials™. © Copyright 2024, Selected Revisions April 10, 2024. American Society of Health-System Pharmacists, Inc., 4500 East-West Highway, Suite 900, Bethesda, Maryland 20814.
† Off-label: Use is not currently included in the labeling approved by the US Food and Drug Administration.
References
Only references cited for selected revisions after 1984 are available electronically.
102. Hansbrough JR, Wedner HJ, Chaplin DD et al. Anaphylaxis to intravenous furosemide. J Allergy Clin Immunol. 1987; 80:538-41. http://www.ncbi.nlm.nih.gov/pubmed/3668117?dopt=AbstractPlus
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