574 Herb Illica is listed under Kidney support and is a wholesome source of calcium for our hair, nails, bones and teeth. It contians horsetail and several other herbs. The FDA does not approve of these statements and you are taking this formula at your own risk. As with most herbal blends there are no known side effects. This food supplement can NOT be returned and you are taking this at your own risk. The FDA does not approve of these statements. 574*HERB ILICA#1(Calcium source, hair/nails): lobelia leaf, oat straw stem and horsetail leaf.