What are the side effects of ethacrynic acid?

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Common side effects of ethacrynic acid include:

  • dizziness
  • headaches
  • loss of appetite
  • mild diarrhea
  • muscle cramps
  • stomach pain
  • thirst
  • trouble swallowing
  • upset stomach
  • vomiting
  • weakness

Unless these side effects are persistent, you don't need to seek medical attention.

Contact your doctor immediately if you experience:

  • an abnormal heartbeat
  • bloody urine or stools
  • chills
  • confusion
  • coughing up blood or vomit that looks like coffee grounds
  • difficulty swallowing
  • dry mouth
  • easy bruising or bleeding
  • excessive thirst
  • feeling like your ear is full
  • feeling restless or weak
  • flu symptoms
  • hearing loss
  • jaundice
  • loss of balance
  • loss of hearing
  • muscle pain or weakness
  • nausea
  • rapid weight loss
  • rash
  • ringing or fullness in the ears
  • severe or watery diarrhea
  • sore throat
  • unusual bleeding or bruising
  • unusual weakness or vomiting
  • abdominal pain
  • persistent fever
  • night sweats
  • weight loss

Seek medical attention if you experience an allergic reaction, such as itchy skin or hives or a rash.  Call 911 for chest pain or breathing problems.