Dolomite is a sedimentary rock composed of Calcium magnesium carbonate (CaCO3) that forms mainly from marine animal skeletons. It is a type of limestone that is manufactured to be used for various purposes. It is deemed safe to consume and come in calcium or magnesium supplements, tablets, capsules or antacids depending on your needs. Nonetheless, some people have allergic reactions to certain amounts of minerals and should seek medical help before consuming any dolomite products. It contains major ingredients of calcium carbonate and magnesium carbonate.