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Calcium carbonate/ magnesium carbonate

Generic Name: calcium carbonate/magnesium carbonate (KAL-see-um KAR-boh-nate/mag-NEE-zee-um KAR-boh-nate)
Brand Name: Mylanta

Calcium carbonate/ magnesium carbonate is used for:

Treating acid indigestion, heartburn, and sour stomach. It may also be used for other conditions as determined by your doctor.

Calcium carbonate/magnesium carbonate is an antacid. It works by neutralizing the acid in the stomach.

Do NOT use calcium carbonate/ magnesium carbonate if:

  • you are allergic to any ingredient in calcium carbonate/magnesium carbonate
  • you have an increased calcium level in your blood

Contact your doctor or health care provider right away if any of these apply to you.

Before using calcium carbonate/ magnesium carbonate:

Some medical conditions may interact with calcium carbonate/magnesium carbonate. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have appendicitis, a history of kidney conditions, colon or intestinal blockage, parathyroid hormone (PTH) deficiency, or sarcoidosis

Some MEDICINES MAY INTERACT with calcium carbonate/magnesium carbonate. Tell your health care provider if you are taking any other medicines, especially any of the following:

  • Anticoagulants (eg, warfarin) because the risk of their side effects may be increased by calcium carbonate/magnesium carbonate
  • Azole antifungals (eg, ketoconazole), bisphosphonates (eg, alendronate), cation exchange resins (eg, sodium polystyrene sulfonate), cephalosporins (eg, cephalexin), mycophenolate, penicillamine, quinolone antibiotics (eg, ciprofloxacin), or tetracyclines (eg, doxycycline) because their effectiveness may be decreased by calcium carbonate/magnesium carbonate

This may not be a complete list of all interactions that may occur. Ask your health care provider if calcium carbonate/magnesium carbonate may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use calcium carbonate/ magnesium carbonate:

Use calcium carbonate/magnesium carbonate as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Take calcium carbonate/magnesium carbonate by mouth with or without food. Follow with a full glass (8 oz/240 mL) of water or other liquid.
  • If you miss a dose of calcium carbonate/magnesium carbonate, take it as soon as you remember. Continue to take it as directed by your doctor or on the package label.

Ask your health care provider any questions you may have about how to use calcium carbonate/magnesium carbonate.

Important safety information:

  • Do NOT take more than the recommended dose or use the maximum dose for more than 2 weeks without checking with your doctor.
  • If your symptoms do not get better within 2 weeks or if they get worse, check with your doctor.
  • PREGNANCY and BREAST-FEEDING: It is not known if calcium carbonate/magnesium carbonate can cause harm to the fetus. If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using calcium carbonate/magnesium carbonate while you are pregnant. It is not known if this medicine is found in breast milk. If you are or will be breast-feeding while you use calcium carbonate/magnesium carbonate, check with your doctor. Discuss any possible risks to your baby.

Possible side effects of calcium carbonate/ magnesium carbonate:

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; diarrhea; stomach upset.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); loss of appetite; muscle weakness; nausea; slow reflexes; vomiting.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include diarrhea; stomach cramps.

Proper storage of calcium carbonate/magnesium carbonate:

Store calcium carbonate/magnesium carbonate at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep calcium carbonate/magnesium carbonate out of the reach of children and away from pets.

General information:

  • If you have any questions about calcium carbonate/magnesium carbonate, please talk with your doctor, pharmacist, or other health care provider.
  • Calcium carbonate/magnesium carbonate is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.
  • Check with your pharmacist about how to dispose of unused medicine.

This information should not be used to decide whether or not to take calcium carbonate/magnesium carbonate or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about calcium carbonate/magnesium carbonate. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to calcium carbonate/magnesium carbonate. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using calcium carbonate/magnesium carbonate.

Issue Date: June 3, 2015