Good Health Supercal is a high potency supplement containing calcium citrate; a well-absorbed form of calcium, and calcium hydroxyapatite along with cofactors including magnesium, manganese, silica, boron, zinc, Vitamins K and D necessary for optimal bone health.   Ingredients: Calcium (from citrate tetrahydrate) 137mg, Calcium (from Hydroxyapatite) 14mg, Zinc (from gluconate) 32mcg, Manganese (from amino acid chelate) 1mg, Boron (from Borax) 1mg, Magnesium (from oxide) 135mcg, Phytomenadione (Vitamin K1) 1mcg, Colecalciferol (Vitamin D3 1iu) 2.5mcg. Herbal extract equivalent to dry: Equisetum arvense Stem (Horsetail) 5mg.    Serving size/Dosage: Adults: Take 1 to 3 tablets daily before meals or as professionally...