section name header

Pronunciation ⬇

fur-OH-se-mide

Classifications ⬆ ⬇

Therapeutic Classification: diuretics

Pharmacologic Classification: loop diuretics

Indications ⬆ ⬇

IM:

BEERS REMS


Action ⬆ ⬇

  • Inhibits the reabsorption of sodium and chloride from the loop of Henle and distal renal tubule.
  • Increases renal excretion of water, sodium, chloride, magnesium, potassium, and calcium.
  • Effectiveness persists in impaired renal function.
Therapeutic effects:
  • Diuresis and subsequent mobilization of excess fluid (edema, pleural effusions).
  • Decreased BP.

Pharmacokinetics ⬆ ⬇

Absorption: 60–67% absorbed after oral administration (↓ in acute HF and in renal failure); also absorbed from IM sites; IV administration results in complete availability; 99.6% absorbed after SUBQ administration.

Distribution: Unknown.

Protein Binding: 91–99%.

Metabolism/Excretion: Minimally metabolized by liver, some nonhepatic metabolism, some renal excretion as unchanged drug.

Half-Life: 30–120 min (↑ in renal impairment).

Time/Action Profile ⬆ ⬇

(diuretic effect)

ROUTEONSETPEAKDURATION
PO30–60 min1–2 hr6–8 hr
IM10–30 minunknown4–8 hr
IV5 min30 min2 hr
SUBQunknownunknown8 hr

Contraind./Precautions ⬆ ⬇

Contraindicated in:

Use Cautiously in:

Adv. Reactions/Side Effects ⬆ ⬇

CV: hypotension

Derm: ERYTHEMA MULTIFORME, photosensitivity, pruritus, rash, STEVENS-JOHNSON SYNDROME (SJS), TOXIC EPIDERMAL NECROLYSIS (TEN), urticaria

EENT: blurred vision, hearing loss, tinnitus

Endo: hyperglycemia

F and E: dehydration, hypocalcemia, hypochloremia, hypokalemia, hypomagnesemia, hyponatremia, hypovolemia, metabolic alkalosis

GI: ↑liver enzymes, anorexia, constipation, diarrhea, dry mouth, dyspepsia, nausea, pancreatitis, vomiting

GU: excessive urination, nephrocalcinosis, renal impairment

Hemat: AGRANULOCYTOSIS, APLASTIC ANEMIA, hemolytic anemia, leukopenia, thrombocytopenia

Metab: hypercholesterolemia, hypertriglyceridemia, hyperuricemia

MS: muscle cramps

Neuro: dizziness, headache, paresthesia, vertigo

Misc: fever

Interactions ⬆ ⬇

Drug-drug:

Route/Dosage ⬆ ⬇

Edema

Hypertension

Availability ⬆ ⬇

(Generic available)

Assessment ⬆ ⬇

Lab Test Considerations:

Implementation ⬆ ⬇

IV Administration:

Patient/Family Teaching ⬆ ⬇

Evaluation/Desired Outcomes ⬆ ⬇

US Brand Names ⬆ ⬇

Furoscix, Lasix

Pill Image

Furosemide_195-9157.jpg

Code ⬆

NDC Code