Natural Factors Calcium & Magnesium Citrate with D3 and potassium, zinc & manganese helps in the development and maintenance of bones and teeth. The minerals are in the citrate form, making them more readily absorbable and metabolized by the body. Vitamin D3 is in the cholecalciferol form, which is natural, safe, and highly absorbable. Promotes strong bones and teeth Protects against the effects of stress Potassium, zinc, D3, and manganese for enhanced mineral absorption Aids in a restful Highly bioavailable Supports healthy blood cells Gluten, soy, yeast, and GMO free