Vitamin D3 supports healthy bones and teeth by increasing calcium and phosphorus absorption*. Vitamin D also helps support the function of the immune system, nerves and muscles.* Vitamin D3 supplements may be necessary to achieve optimal intake during winter months, when sunscreen is used, or when dietary intake is insufficient.* Vitamin D3 2000 IU from webber naturals includes 200 mg of organic flaxseed oil to enhance absorption.