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Ferrous gluconate Side Effects

Applies to ferrous gluconate: oral tablet.


You should not use this medicine if you have hemochromatosis, hemosiderosis, or hemolytic anemia.

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

Call your doctor at once if you have:

  • bright red blood in your stools;

  • black or tarry stools;

  • a fever;

  • stomach pain;

  • coughing up blood or vomit that looks like coffee grounds; or

  • pain in your chest or throat when swallowing a ferrous gluconate tablet.

Common side effects may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

For Healthcare Professionals

Applies to ferrous gluconate: compounding powder, oral capsule, oral liquid, oral tablet, oral tablet extended release.


Frequency not reported: Gastrointestinal discomfort, anorexia, diarrhea, nausea, heartburn, vomiting, constipation, fecal impaction, darkening of stools, gastrointestinal necrosis, gastrointestinal perforation, gastrointestinal stricture, epigastric pain, hematemesis[Ref]


Frequency not reported: Allergic reactions[Ref]


Frequency not reported: Circulatory collapse[Ref]


1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

2. "Product Information. Ferrous Gluconate (ferrous gluconate)." Paddock Laboratories Inc (2016):

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.