Furosemide (Oral Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Rare
  • Chest pain
  • Chills
  • Cough or hoarseness
  • Fever
  • General feeling of tiredness or weakness
  • Headache
  • Lower back or side pain
  • Painful or difficult urination
  • Shortness of breath
  • Sore throat
  • Sores, ulcers, or white spots on lips or in mouth
  • Swollen or painful glands
  • Tightness in chest
  • Unusual bleeding or bruising
  • Unusual tiredness or weakness
  • Wheezing
Incidence not determined
  • Back or leg pains
  • Black, tarry stools
  • Bleeding gums
  • Blistering, peeling, or loosening of skin
  • Bloating
  • Blood in urine or stools
  • Blurred vision
  • Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • Changes in skin color, pain, tenderness, or swelling of foot or leg
  • Clay-colored stools
  • Cloudy urine
  • Cold sweats
  • Confusion
  • Constipation
  • Continuing ringing or buzzing or other unexplained noise in ears
  • Coughing up blood
  • Cracks in the skin
  • Darkened urine
  • Diarrhea
  • Difficulty breathing
  • Dizziness, faintness, or lightheadedness when getting up from lying or sitting position
  • Dry mouth
  • Fast heartbeat
  • Flushed, dry skin
  • Fruit-like breath odor
  • General body swelling
  • Greatly decreased frequency of urination or amount of urine
  • Hearing loss
  • Increased hunger
  • Increased thirst
  • Increased urination
  • Indigestion
  • Itching
  • Joint stiffness or swelling
  • Loss of appetite
  • Loss of heat from the body
  • Nausea or vomiting
  • Nosebleeds
  • Pain in joints or muscles
  • Pains in stomach, side, or abdomen, possibly radiating to the back
  • Pale skin
  • Pinpoint red spots on the skin
  • Red, irritated eyes
  • Red, swollen skin
  • Scaly skin
  • Severe abdominal pain
  • Skin rash
  • Stomach cramps
  • Sugar in the urine
  • Sweating
  • Swelling of feet or lower legs
  • Troubled breathing with exertion
  • Unpleasant breath odor
  • Unusual weight loss
  • Vomiting of blood
  • Yellow eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose
  • Decreased urination
  • Drowsiness
  • Increase in heart rate
  • Irregular heartbeat
  • Irritability
  • Mood changes
  • Muscle cramps
  • Numbness, tingling, pain, or weakness in hands, feet, or lips
  • Rapid breathing
  • Seizures
  • Sunken eyes
  • Thirst
  • Trembling
  • Weak pulse
  • Weakness and heaviness of legs
  • Wrinkled skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not determined
  • Feeling of constant movement of self or surroundings
  • Hives or welts
  • Increased sensitivity of skin to sunlight
  • Muscle spasm
  • Redness or other discoloration of skin
  • Restlessness
  • Sensation of spinning
  • Severe sunburn
  • Weakness

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Precautions

DR602525

Portions of this document last updated:

Nov. 1, 2009

Source: Drug Information provided by: Micromedex

Copyright © 2009 Thomson Healthcare Inc. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.


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