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Calcium Carbonate Review

Calcium Carbonate is perhaps the most common type of calcium used today among dietary calcium-carbonate | Articlesupplements.  The mineral’s attraction to pill manufacturers is obvious: it’s quite inexpensive,  highly concentrated, and easy to process into capsules or tablets.  On the flipside, the compound is not highly soluble, unabsorbable under certain digestive conditions, and can produce intestinal gas.

According the Industrial Minerals Association of America:

Calcium carbonate, or CaCO3, comprises more than 4% of the earth’s crust and is found throughout the world.  Its most common natural forms are chalk, limestone, and marble, produced by the sedimentation of the shells of small fossilized snails, shellfish, and coral over millions of years…Many of us encounter [it] for the first time in the school classroom, where we use blackboard chalk…  
Pure calcium carbonate can be produced from marble, or it can be prepared by passing carbon dioxide into a solution of calcium hydroxide…The other primary type of industrial product is “ground calcium carbonate,” or GCC. GCC, as the name implies, involves crushing and processing limestone to create a powdery-like form graded by size and other properties for many different industrial and pharmaceutical applications.

According to MedlinePlus.

Calcium carbonate comes as a tablet, chewable tablet, capsule, and liquid to take by mouth. It usually is taken three or four times a day. Follow the directions on your prescription or package label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take [it] exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. When using this medicine as a dietary supplement, take it with food or following meals.
Do not take [CaCO3] as an antacid for more than 2 weeks unless your doctor tells you to.

What special precautions should I follow?   
Before taking calcium carbonate,
•    tell your doctor and pharmacist if you are allergic to [CaC03] or any other drugs.
•    tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially digoxin (Lanoxin), etidronate (Didronel), phenytoin (Dilantin), tetracycline (Sumycin), and vitamins. Do not take it within 1-2 hours of taking other medicines. Calcium may decrease the effectiveness of the other medicine.
•    tell your doctor if you have or have ever had kidney disease or stomach conditions.
•    tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking [CaCO3], call your doctor.

What side effects can this medication cause? 
Calcium carbonate may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
•    upset stomach
•    vomiting
•    stomach pain
•    belching
•    constipation
•    dry mouth
•    increased urination
•    loss of appetite
•    metallic taste
Brand names   
•    Alka-Mints®
•    Calel-D®
•    Caltrate 600® 
•    Chooz®
•    Os-Cal 500®
•    Rolaids Calcium Rich®   
•    Titralac®
•    Tums®
              Trademarks are the property of their respective owners. 

Calcium-Carbonate | ArticleFor a premium calcium supplement, refer to brands such as  AdvaCAL.For an inexpensive calcium source or antacid, select a brand comprised of calcium carbonate.