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Drug Library

Lasix

Generic Name:furosemide

Revised:4/1/2000

  Table of Contents
  • Overview
  • Side Effects and Interactions
  • Taking the Medicine
  • Special Precautions
  •   Side Effects and Interactions

    People on furosemide may feel dizzy or faint if they stand up rapidly.

    Older people especially may need to take care to avoid falling when they first get up.

    Increased frequency of urination is common but may be less bothersome if you take your medicine at breakfast rather than at night.

    Other adverse reactions to be alert for include rash, itching, sensitivity to sunlight leading to sunburn, ringing in the ears, nausea, diarrhea or constipation, muscle cramps, hearing loss, unexplained sore throat with fever, bruising, blurred vision, loss of appetite, increases in blood sugar, headache, gout and tingling or numbness in hands or feet.

    Report any symptoms to your physician promptly.

    Furosemide can interact with a number of other medications. Lanoxin and other digitalis heart medicines may cause abnormal heart rhythms if potassium levels are decreased by diuretics.

    Indocin, Clinoril, ibuprofren, Dilantin and activated charcoal may interfere with the effectiveness of furosemide.

    At high doses, furosemide can increase the activity of the blood thinner Coumadin.

    Adding furosemide to thiazide diuretics may deplete the body rapidly of fluid and minerals, and calls for careful monitoring.

    Licorice can greatly increase potassium loss in people taking Lasix.

    Lasix and other potassium-wasting diuretics are probably incompatible with the herb cascara sagrada, at least if it were used more than very occasionally. Cascara sagrada, like other strong laxatives, may reduce the absorption of other medicines taken orally.

    Aloe (latex) might be dangerous for anyone taking Lasix because of an additive effect. It should be avoided in such situations.

    Check with your doctor and pharmacist to make sure furosemide is safe in combination with any other drugs or herbs you take.

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