Note: This document contains side effect information about ferrous gluconate. Some dosage forms listed on this page may not apply to the brand name Fergon.

Applies to ferrous gluconate: oral tablet.

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 (the active ingredient contained in Fergon) tablet.

Common side effects may include:

• constipation, diarrhea;

• nausea, vomiting, stomach pain;

• 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.

Gastrointestinal

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]

Hypersensitivity

Frequency not reported: Allergic reactions^[Ref]

Cardiovascular

Frequency not reported: Circulatory collapse^[Ref]