Vitamin D-3 Benefits. Support The Maintenance Of Healthy Calcium And Phosphorus Levels In The Body For Strong Bones. It Also Supports Muscle Strength In Older Adults, And It Also Plays An Active Role In A Healthy Immune Response Suggested Use. 1 To 2 Tablets Daily With A Meal Well Made Suplement. Contains No Yeast, Dairy, Egg, Gluten, Soy Or Wheat. Contains No Salt, Preservatives, Or Artificial Color, Flavor Or Fragrance Trusted For Over 35 Years. Source Naturals Was Created In 1982 By Ceo Ira Goldberg To Support Each Individual'S Potential To Enjoy Optimal Health Manufactured In The Usa. Our Facility Is Located In Scotts Valley California