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Ferric citrate Side Effects

Medically reviewed by Last updated on May 5, 2021.

For the Consumer

Applies to ferric citrate: oral tablet

Side effects requiring immediate medical attention

Along with its needed effects, ferric citrate 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 while taking ferric citrate:

More common

Side effects not requiring immediate medical attention

Some side effects of ferric citrate 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:

More common

  • Cough
  • dark-colored stools
  • diarrhea
  • difficulty having a bowel movement

For Healthcare Professionals

Applies to ferric citrate: oral tablet


The most common adverse events were gastrointestinal events.[Ref]


Very common (10% or more): Discolored feces (22%), diarrhea (21%), constipation (18%), nausea (11%)

Common (1% to 10%): Vomiting, abdominal pain[Ref]


Common (1% to 10%): Hyperkalemia[Ref]


Common (1% to 10%): Cough[Ref]


1. "Product Information. Auryxia (ferric citrate)." Keryx Biopharmaceuticals, Inc., New York, NY.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.