Possible Side Effects of Furosemide

Get emergency medical help if you have signs of an allergic reaction to furosemide: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • ringing in your ears, hearing loss;
  • confusion, drowsiness, problems with memory or speech;
  • jaundice (dark urine, yellowing of the skin or eyes);
  • severe pain in your upper stomach spreading to your back;
  • nausea, vomiting, loss of appetite, sweet or musty breath odor;
  • pale skin, easy bruising or bleeding;
  • sudden weakness or ill feeling, fever, chills, sore throat;
  • signs of an electrolyte imbalance – dry mouth, increased thirst, mood changes, muscle pain or weakness, lack of energy, fast heartbeats, little or no urination;
  • kidney problems – little or no urination, painful or difficult urination, swelling in your feet or ankles, feeling tired or short of breath; or
  • severe skin reaction – fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Common furosemide side effects may include:

  • numbness or tingling;
  • headache, dizziness; or
  • blurred vision.

This is not a complete list of side effects and others may occur.

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