Ingredient(s): Each effervescent tablet contains : Calcium carbonate ...670 mg (equivalent to 268 mg of elemental calcium) , Vitamin D ...400 I.U. , Vitamin C ...500 mg. , Vitamin B6 ...10.0 mg . Indications : To help prevent deficiencies of Calcium, vitamin D, vitamin C and vitamin B6 . For the treatment of deficiency state resulting from reduced intake of vitamin C, vitamin D and vitamin B6 in the diet . However this product is not for correction of dietary deficiency of vitamin D , where there is fat malabsorption and where deficiency symptoms are caused by end organ insensitivity.