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General Medication Fact Sheet for Furosemide
| Field | Information |
|---|---|
| Generic Name | Furosemide |
| Brand Name Versions | Lasix |
| Boxed/Label Warning | Furosemide is a potent diuretic which, if given in excessive amounts, can lead to profound diuresis with water and electrolyte depletion. Careful medical supervision is required. |
| Purpose | Treats fluid retention (edema) and high blood pressure |
| Mechanism of Action | Inhibits sodium and chloride reabsorption in the kidneys, increasing urine production |
| Dosage Forms | Oral tablets, oral solution, injection |
| Available Strengths | 20 mg, 40 mg, 80 mg |
| Dosage Frequency | Typically once or twice daily, or as directed by a healthcare provider |
| Common Side Effects | Frequent urination, dehydration, electrolyte imbalance (e.g., low potassium), dizziness |
| Serious Side Effects | Severe electrolyte imbalance, kidney problems, hearing loss, allergic reactions |
| Drug Interactions | Digoxin, lithium, certain antibiotics (aminoglycosides), NSAIDs, other diuretics, corticosteroids |
| Important Notes | Monitor potassium levels, stay hydrated, consult a doctor if you have kidney or liver problems |
| Storage | Store at room temperature away from moisture and light |
| Missed Dose | Take as soon as you remember; skip if it’s almost time for your next dose. Do not double the dose. |
| Alternatives | Bumetanide, Torsemide, Hydrochlorothiazide |
Furosemide Alternatives
| Medication | Mechanism of Action | Notes |
|---|---|---|
| Bumetanide (Bumex) | Loop diuretic; inhibits sodium and chloride reabsorption | More potent than furosemide; may have a shorter duration of action. |
| Torsemide (Demadex) | Loop diuretic; inhibits sodium and chloride reabsorption | Longer duration of action compared to furosemide. |
| Hydrochlorothiazide (Microzide) | Thiazide diuretic; inhibits sodium reabsorption in the distal tubule | Less potent than loop diuretics; often used for hypertension. |
Furosemide Side Effects
| Common Side Effects | Serious Side Effects |
|---|---|
| Frequent urination | Severe electrolyte imbalance (low potassium, low sodium) |
| Dehydration | Kidney problems |
| Dizziness | Hearing loss (ototoxicity) |
| Electrolyte imbalance (e.g., low potassium) | Allergic reactions (rash, itching, swelling, difficulty breathing) |
| Muscle cramps | Gout |
Furosemide Dosage Guide
| Condition | Starting Dose | Maintenance Dose | Administration Notes |
|---|---|---|---|
| Edema | 20-80 mg | May increase gradually up to 600 mg/day | Take on an empty stomach. |
| Hypertension | 40 mg twice daily | Adjusted based on blood pressure response | Take on an empty stomach. |
| Chronic Kidney Disease | Individualized | Individualized, based on fluid balance | Monitor kidney function closely. |
Furosemide Price With And Without Insurance
| Purchase Context | Estimated Price |
|---|---|
| With Insurance | $10 |
| Without Insurance (U.S.) | $15 |
| From Canada | $5 |
