Nephro-Fer Side Effects
Generic name: ferrous fumarate
Note: This document contains side effect information about ferrous fumarate. Some of the dosage forms listed on this page may not apply to the brand name Nephro-Fer.
Some side effects of Nephro-Fer may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to ferrous fumarate: capsules, controlled-release tablets, tablets
Other dosage forms:
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur while taking ferrous fumarate (the active ingredient contained in Nephro-Fer)
Constipation; dark or green stools; diarrhea; loss of appetite; nausea; stomach cramps, pain, or upset; vomiting.
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black, tarry stools; blood or streaks of blood in the stool; fever; severe or persistent nausea, stomach pain, or vomiting; vomit that looks like blood or coffee grounds.
For Healthcare Professionals
Applies to ferrous fumarate: compounding powder, oral liquid, oral suspension, oral tablet, oral tablet chewable
Gastrointestinal side effects are generally dose-related and have included nausea, constipation, anorexia, heartburn, vomiting and diarrhea. In addition, stools may appear darker in color in patients taking ferrous fumarate (the active ingredient contained in Nephro-Fer)
Oral preparations may rarely cause Hemoccult-positive stools, patients with positive tests generally require further work-up.
Gastrointestinal discomfort may be minimized by initiating ferrous fumarate therapy at smaller doses and gradually titrating upwards until the desired dose is achieved.
Gastrointestinal discomfort may also be minimized by administering each dose with food. However, concurrent administration of ferrous fumarate with food may decrease the amount of iron absorbed.
Constipation may be relieved by administering docusate sodium 100 mg to 200 mg per day in addition to increasing the intake of oral fluids, such as water.
It has been hypothesized that gastroenteritis is caused by bacteria that become virulent in the presence of iron overload resulting in a systemic infection. Treatment consists of discontinuing deferoxamine and initiating appropriate antimicrobial therapy.
Immunologic side effects have rarely included gastroenteritis associated with Yersinia enterocolitica and Listeria monocytogenes in patients with iron overload status receiving treatment with deferoxamine.
Local side effects have included gangrene.
Localized corrosion has been reported in a pregnant woman taking ferrous sulfate (tablet) that lodged in a Meckel's diverticulum.
There have also been reports of wax-matrix ferrous sulfate tablets (delayed-release) lodging in the bowels of patients with strictures.
Stained teeth have primarily occurred following ingestion of ferrous fumarate (the active ingredient contained in Nephro-Fer) liquid preparation. Liquid dosage forms should be diluted in juice or water and sipped through a straw to aid in prevention of staining.
Iron overload (i.e., hemosiderosis) has been reported in patients genetically predisposed, or have underlying disorders, that augment the absorption of iron. It has also occurred following administration of excessive parenteral iron therapy, combination of oral and parenteral iron, or in patients with hemoglobinopathies that were erroneously diagnosed as iron deficiency anemia. Hemosiderosis is treated with repeated phlebotomy or long-term administration of deferoxamine. The liver is particularly susceptible to toxicity in iron-overload states.
Other side effects have included stained teeth and iron overload (hemosiderosis). Secondary hemochromatosis due to prolonged iron ingestion has been reported rarely.
More Nephro-Fer resources
- Nephro-Fer Concise Consumer Information (Cerner Multum)
- ferrous fumarate MedFacts Consumer Leaflet (Wolters Kluwer)
- Femiron Advanced Consumer (Micromedex) - Includes Dosage Information
- Feostat chewable tablets MedFacts Consumer Leaflet (Wolters Kluwer)
- Ircon MedFacts Consumer Leaflet (Wolters Kluwer)
Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This information does not endorse drugs, diagnose patients, or recommend therapy. This drug information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective, or appropriate for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of information provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist.