Hydroxyapatite

    Written by:
    Marina Shkayeva

    Fact-checked

    by:

    Nick Milazzo
    Last Updated: February 15, 2024

    Hydroxyapatite is a calcium-phosphate compound which makes up the hard structural part of bones and teeth. It is used in dietary supplements as a calcium source and in toothpaste to prevent cavities and sensitivity.

    Overview

    Dosage information

    In dietary supplements, ossein-hydroxyapatite and microcrystalline hydroxyapatite contain about 20-25% of elemental calcium by weight. Typical dosage of ossein-hydroxyapatite is two 830 mg tablets twice daily; each tablet contains 178 mg elemental calcium, for a daily total of 712 mg elemental calcium.[1] A typical dose of microcrystalline hydroxyapatite compound is eight 500 mg capsules; each capsule contains 125 mg elemental calcium, for a daily total of 1000 mg elemental calcium.[2]

    In toothpaste, hydroxyapatite concentration is typically 10%.[3]

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