What is calcium citrate?

Calcium is a mineral that is found naturally in foods. Calcium is necessary for many normal functions of your body, especially bone formation and maintenance. Calcium can also bind to other minerals (such as phosphate) and aid in their removal from the body.

Calcium citrate is used to prevent and to treat calcium deficiencies.

Calcium citrate may also be used for purposes other than those listed in this medication guide.

Precautions

Before taking this medication, tell your doctor if you

  • have had kidney stones;
  • have parathyroid gland disease;
  • take antacids or other calcium supplements; or
  • take a tetracycline antibiotic such as tetracycline (Sumycin, Achromycin V, and others), demeclocycline (Declomycin), doxycycline (Vibramycin, Monodox, Doxy, and others), minocycline (Minocin, Dynacin, and others), or oxytetracycline (Terramycin, and others).

You may not be able to take calcium citrate, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions, or take any of the medications, listed above.

Talk to your doctor before taking calcium citrate if you are pregnant. In general, calcium is important for the development of an unborn baby.

Talk to your doctor before taking calcium citrate if you are breast-feeding. Calcium is important for the development of a breast-feeding baby.

If you take other medicines, do not take calcium citrate without first talking to your doctor.

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Instructions

Seek emergency medical attention.

Symptoms of a calcium overdose include nausea, vomiting, decreased appetite, constipation, confusion, delirium, stupor, and coma.

Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and take only the next regularly scheduled dose. Do not take a double dose of this medicine unless your doctor directs otherwise.

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Side Effects

Stop taking calcium citrate and seek emergency medical attention if you experience a rare allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives).

Other, less serious side effects may be more likely to occur. Continue to take calcium citrate and notify your doctor if you experience

  • nausea or vomiting;
  • decreased appetite;
  • constipation;
  • dry mouth or increased thirst; or
  • increased urination.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

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Interactions

Before taking calcium citrate, tell your doctor if you are taking

  • digoxin (Lanoxin, Lanoxicaps);
  • antacids containing calcium or aluminum;
  • another calcium supplement;
  • calcitriol (Rocaltrol) or vitamin D supplements; or
  • a tetracycline antibiotic such as tetracycline (Sumycin, Achromycin V, and others), demeclocycline (Declomycin), doxycycline (Vibramycin, Monodox, Doxy, and others), minocycline (Minocin, Dynacin, and others), or oxytetracycline (Terramycin, and others).

You may not be able to take calcium citrate, or you may require a dosage adjustment or special monitoring during your treatment if you are taking any of the medicines listed above.

Drugs other than those listed here may also interact with calcium citrate. Talk to your doctor and pharmacist before taking any other prescription or over-the-counter medicines.

Other Names

Cit Calcium, Citracal, Citracal Liquitab, calcium citrate, and Cit Calcium (obsolete)

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Disclaimer

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. 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. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. 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.

Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04

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