Related Terms

  • Aluminum, arsenic, calcium, calcium carbonate, calcium supplements, carbonate rock, ceramics, dietary calcium supplements, dolomite novelties, dolomite phosphate rock (DPR) fertilizers, dolomite rock, dolomitic limestone, dolostone, magnesian limestone, magnesium, metal, metal exposure, mineral dolomite, potassium, silicon, soapstone (steatite) cookware, transvaal dolomite.


  • Dolomite is a sedimentary carbonate rock or mineral composed of calcium magnesium carbonate crystals. Dolomite was first described in 1791 by the French naturalist and geologist Déodat Gratet de Dolomieu (1750-1801). He observed dolomite in a mountain group in northern Italy, now named the Dolomite Alps. Dolomite rock (or dolostone) is mainly composed of the mineral dolomite. Dolomitic limestone (or magnesian limestone) is limestone that is partially replaced by dolomite.
  • Dolomite is commonly used for its potential ability to act as a calcium and magnesium supplement, although its safety and effectiveness as such has yet to be proven. Evidence supporting dolomite’s use in any other human condition is lacking.

Evidence Table


    These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.

*Key to grades:



    The below uses are based on tradition, scientific theories, or limited research. They often have not been thoroughly tested in humans, and safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. There may be other proposed uses that are not listed below.



    The below doses are based on scientific research, publications, traditional use, or expert opinion. Many herbs and supplements have not been thoroughly tested, and safety and effectiveness may not be proven. Brands may be made differently, with variable ingredients, even within the same brand. The below doses may not apply to all products. You should read product labels, and discuss doses with a qualified healthcare provider before starting therapy.

  • Adults (18 years and older)

    • There is no proven effective dose for dolomite. Dietary supplements have recommended a dose of 45-483 milligrams of magnesium daily, 1000 milligrams of calcium daily, up to age 50, and 1200 milligrams of calcium daily after the age of 50. However, it is unclear if dolomite is a safe and effective means of fulfilling daily requirements for calcium or magnesium.
  • Children (under 18 years old)

    • There is no proven safe or effective dose for dolomite in children.



    The U.S. Food and Drug Administration does not strictly regulate herbs and supplements. There is no guarantee of strength, purity or safety of products, and effects may vary. You should always read product labels. If you have a medical condition, or are taking other drugs, herbs, or supplements, you should speak with a qualified healthcare provider before starting a new therapy. Consult a healthcare provider immediately if you experience side effects.

  • Allergies

    • No known allergy or sensitivity to dolomite.
  • Side Effects and Warnings

    • Some calcium supplements, which may be derived from dolomite, have been found to contain unsafe levels of lead for children aged six years and younger, according to the U.S. Food and Drug Administration (FDA). This may pose the greatest risk to children with lactose intolerance, who may rely on calcium supplements as an alternative to dairy products.
    • Dolomite may contain potentially toxic metals, including lead, arsenic, and mercury, which may lead to skin, blood, or neurologic disorders.
    • Gastrointestinal problems (such as nausea and diarrhea), respiratory problems (including the development of nodules on the lungs), and muscular problems (such as weakness) have been reported.
    • Large amounts of magnesium may cause hypermagnesemia (increased levels of magnesium), with symptoms including low blood pressure, irregular heartbeats, cardiac arrest, loss of tendon reflexes, and/or muscle weakness.
  • Pregnancy and Breastfeeding

    • Dolomite is not recommended in pregnant or breastfeeding women due to a lack of available scientific evidence.



    Most herbs and supplements have not been thoroughly tested for interactions with other herbs, supplements, drugs, or foods. The interactions listed below are based on reports in scientific publications, laboratory experiments, or traditional use. You should always read product labels. If you have a medical condition, or are taking other drugs, herbs, or supplements, you should speak with a qualified healthcare provider before starting a new therapy.

  • Interactions with Drugs

    • Dolomite may interact with antiviral drugs, calcium, or drugs with hormonal effects.
  • Interactions with Herbs and Dietary Supplements

    • Dolomite may interact with antiviral herbs or supplements, calcium, magnesium, or herbs and supplements with hormonal effects.


  • This information is based on a systematic review of scientific literature edited and peer-reviewed by contributors to the Natural Standard Research Collaboration ().



    Natural Standard developed the above evidence-based information based on a thorough systematic review of the available scientific articles. For comprehensive information about alternative and complementary therapies on the professional level, go to . Selected references are listed below.

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  • Bourgoin, B. P., Evans, D. R., Cornett, J. R., et al. Lead content in 70 brands of dietary calcium supplements. Am.J.Public Health 1993;83(8):1155-1160.
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  • Chen, G. C., He, Z. L., Stoffella, P. J., et al. Leaching potential of heavy metals (Cd, Ni, Pb, Cu and Zn) from acidic sandy soil amended with dolomite phosphate rock (DPR) fertilizers. J.Trace Elem.Med.Biol. 2006;20(2):127-133.
    View Abstract
  • Fukaya, Y., Matsumoto, T., Gotoh, M., et al. [Lead exposure of workers in the ceramics industry and relevant factors]. Nippon Eiseigaku Zasshi 1993;48(5):980-991.
    View Abstract
  • Gault, M. H., Chafe, L., Longerich, L., et al. Calcium and calcium magnesium carbonate specimens submitted as urinary tract stones. J.Urol. 1993;149(2):244-249.
    View Abstract
  • Mattos, J. C., Hahn, M., Augusti, P. R., et al. Lead content of dietary calcium supplements available in Brazil. Food Addit.Contam 2006;23(2):133-139.
    View Abstract
  • Mizoguchi, T., Nagasawa, S., Takahashi, N., et al. Dolomite supplementation improves bone metabolism through modulation of calcium-regulating hormone secretion in ovariectomized rats. J.Bone Miner.Metab 2005;23(2):140-146.
    View Abstract
  • Quintaes, K. D., Amaya-Farfan, J., Morgano, M. A., et al. Soapstone (steatite) cookware as a source of minerals. Food Addit.Contam 2002;19(2):134-143.
    View Abstract
  • Reid, J. D. and Andersen, M. E. Calcium oxalate in sarcoid granulomas. With particular reference to the small ovoid body and a note on the finding of dolomite. Am.J.Clin.Pathol. 1988;90(5):545-558.
    View Abstract
  • Roberts, H. J. Potential toxicity due to dolomite and bonemeal. South.Med.J. 1983;76(5):556-559.
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  • Roberts, R. J. Dolomite as a source of toxic metals. N.Engl.J.Med. 2-12-1981;304(7):423.
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  • Scelfo, G. M. and Flegal, A. R. Lead in calcium supplements. Environ.Health Perspect. 2000;108(4):309-313.
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  • Selden, A. I., Berg, N. P., Lundgren, E. A., et al. Exposure to tremolite asbestos and respiratory health in Swedish dolomite workers. Occup.Environ.Med. 2001;58(10):670-677.
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  • Steenkamp, V., Stewart, M. J., Curowska, E., et al. A severe case of multiple metal poisoning in a child treated with a traditional medicine. Forensic Sci.Int. 8-28-2002;128(3):123-126.
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  • Yamana, H., Ito, H., Ito, T., et al. Strong antiviral activity of heated and hydrated dolomite–preliminary investigation. J.Vet.Med.Sci. 2007;69(2):217-219.
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