Fergon Side Effects
Generic name: ferrous gluconate
Note: This document contains side effect information about ferrous gluconate. Some of the dosage forms listed on this page may not apply to the brand name Fergon.
For the Consumer
Applies to ferrous gluconate: oral tablet
You should not use this medicine if you have hemochromatosis, hemosiderosis, or hemolytic anemia.
Call your doctor at once if you have:
bright red blood in your stools;
black or tarry stools;
coughing up blood or vomit that looks like coffee grounds; or
pain in your chest or throat when swallowing a ferrous gluconate (the active ingredient contained in Fergon) tablet.
Common side effects may include:
loss of appetite;
green-colored stools; or
temporary staining of the teeth.
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: Circulatory collapse[Ref]
More about Fergon (ferrous gluconate)
- Drug interactions
- Dosage information
- During pregnancy
- Drug images
- En español
- Drug class: iron products
Related treatment guides
1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
2. "Product Information. Ferrous Gluconate (ferrous gluconate)." Paddock Laboratories Inc (2016):
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.