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Furoscix

Furoscix Side Effects

Daisy Chau, PharmDAllison Gourley, PharmD
Reviewed by Daisy Chau, PharmD, Allison Gourley, PharmD
Last reviewed on August 18, 2025

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

Less Common Side Effects

  • Nausea
  • Vomiting
  • Constipation
  • Diarrhea
  • Dizziness
  • Headache
  • Blurry vision
  • Restlessness
  • Sensitivity to sunlight

Furoscix serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • Dehydration and kidney problems: dry mouth, extreme thirsty, muscle pains or cramps, urinating less, headache, dry skin, nausea, vomiting
  • Hearing problems: hearing loss, difficulty hearing, ringing in the ears

Source: DailyMed

The following Furoscix side effects have also been reported

Side effects that you should report to your care team as soon as possible:

  • Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
  • Dehydration—increased thirst, dry mouth, feeling faint or lightheaded, headache, dark yellow or brown urine
  • Hearing loss, ringing in ears
  • High blood sugar (hyperglycemia)—increased thirst or amount of urine, unusual weakness or fatigue, blurry vision
  • Low blood pressure—dizziness, feeling faint or lightheaded, blurry vision
  • Low potassium level—muscle pain or cramps, unusual weakness or fatigue, fast or irregular heartbeat, constipation

Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):

  • Burning or tingling sensation in hands or feet
  • Constipation
  • Diarrhea
  • Dizziness
  • Headache
  • Pain, redness, irritation, or bruising at the injection site
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