Skip to Content
UW Health SMPH
American Family Children's Hospital

calcium carbonate

Pronunciation: KAL see um KAR boe nate

Brand: Alka-Mints, Cal-Gest, Calcarb, Calci Mix, Calci-Chew, Calci-Mix, Calcium Concentrate, Calcium Liquid Softgel, Calcium Oyster Shell, Caltrate, Chooz, Extra Strength Mylanta Calci Tabs, Icar Prenatal Chewable Calcium, Maalox Antacid Barrier, Maalox Childrens', Maalox Quick Dissolve, Maalox Quick Dissolve Maximum Strength, Maalox Regular Strength, Mylanta Child, Nephro Calci, Os-Cal 500, Oysco 500, Oyst Cal 500, Oyster Cal, Oyster Calcium, Oyster Shell, Pepto Children's, Rolaids Sodium Free, Rolaids Soft Chew, Titralac, Tums, Tums 500, Tums E-X, Tums Kids, Tums QuikPak, Tums Ultra

Calcium Carbonate 1250 mg-ROX

oblong, white, imprinted with 54302

Image of Calcium Carbonate 1250 mg-ROX
slide 1 of 1

What is the most important information I should know about calcium carbonate?

Multum donot

Do not take calcium carbonate or antacids that contain calcium without first asking your doctor if you also take other medicines. Calcium can make it harder for your body to absorb certain medicines.

Multum food

Calcium carbonate works best if you take it with food.

What is calcium carbonate?

Calcium is a mineral that is found naturally in foods. Calcium is necessary for many normal functions of the 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 carbonate is used to prevent and to treat calcium deficiencies.

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

What should I discuss with my healthcare provider before taking calcium carbonate?

To make sure you can safely take calcium carbonate, tell your doctor if you have any of these other conditions:

  • a history of kidney stones; or
  • a parathyroid gland disorder.

Talk to your doctor before taking calcium carbonate if you are pregnant.

Talk to your doctor before taking calcium carbonate if you are breast-feeding a baby.

How should I take calcium carbonate?


Multum food

Calcium carbonate works best if you take it with food.

Multum water

Swallow the calcium carbonate tablet or capsule with a full glass of water.

The chewable tablet should be chewed before you swallow it.

Use the calcium carbonate powder as directed. Allow the powder to dissolve completely, then consume the mixture.

Multum shake


Multum rt

Store at room temperature away from moisture and heat.

What happens if I miss a dose?


What happens if I overdose?

Multum emt


Overdose symptoms may include nausea, vomiting, decreased appetite, constipation, confusion, delirium, stupor, and coma.

What should I avoid while taking calcium carbonate?


What are the possible side effects of calcium carbonate?

Multum emt


Less serious side effects may include:

  • nausea or vomiting;
  • decreased appetite;
  • constipation;
  • dry mouth or increased thirst; or
  • urinating more than usual.


What other drugs can affect calcium carbonate?

Calcium carbonate can make it harder for your body to absorb other medications you take by mouth. Tell your doctor if you are taking:

  • digoxin (Lanoxin, Lanoxicaps);
  • antacids or other calcium supplements;
  • calcitriol (Rocaltrol) or vitamin D supplements; or

This list is not complete and other drugs may interact with calcium carbonate. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your doctor or pharmacist can provide more information about calcium carbonate.



Copyright 1996-2013 Cerner Multum, Inc. Version: 5.02. Revision date: 12/15/2010.


