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Generic Name: ferrous fumarate and iron polysaccharide (FER us FUE ma rate and I urn POL ee SAK a ride)
Brand Name: Tandem

Medically reviewed by on Apr 11, 2018 – Written by Cerner Multum

What is Tandem?

Tandem are two different types of iron. You normally get iron from the foods you eat. In your body, iron becomes a part of your hemoglobin (HEEM o glo bin) and myoglobin (MY o glo bin). Hemoglobin carries oxygen through your blood to tissues and organs. Myoglobin helps your muscle cells store oxygen.

Tandem is a combination medicine used to treat iron deficiency anemia (a lack of red blood cells caused by having too little iron in the body).

Tandem may also be used for purposes not listed in this medication guide.

Important Information

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

Before taking this medicine

You should not use Tandem if you are allergic to it, or if you have

  • iron overload disorder (hemochromatosis, hemosiderosis); or

  • hemolytic anemia (caused by the breakdown of red blood cells).

To make sure Tandem is safe for you, tell your doctor if you have:

  • ulcerative colitis;

  • stomach ulcers or similar stomach problems; or

  • a history of a gastrectomy.

Tell your doctor if you are pregnant, or if you become pregnant during treatment. Your dose needs may be different during pregnancy.

Tell your doctor if you are breast-feeding a baby. Your dose needs may be different while you are nursing.

Do not give this medicine to a child younger than 12 years old.

How should I take Tandem?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

It is best to take Tandem on an empty stomach, between meals or at bedtime.

Take with food if this medicine upsets your stomach.

To be sure this medicine is helping your condition, you may need frequent blood tests. You may not notice any change in your symptoms, but your blood work will help your doctor determine how long to treat you with this medicine.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of iron can be fatal, especially in a young child who has accidentally swallowed it.

Overdose symptoms may include metallic taste in the mouth, bloody or tarry stools, vomiting blood, severe shortness of breath, chest pain, pale skin, blue lips or fingernails, loss of consciousness, or seizure (convulsions).

What should I avoid while taking Tandem?

Iron is contained in many vitamin or mineral supplements. Taking certain products together can cause you to get too much iron. Avoid taking any vitamin or mineral supplement your doctor has not recommended.

Tandem side effects

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

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. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Tandem?

Other drugs may interact with ferrous fumarate and iron polysaccharide, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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

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