Source Naturals Vitamin D-3 delivers 5,000 IU of vitamin D-3 in each softgel. Vitamin D-3 helps promote bone health by supporting healthy calcium and phosphorus levels in the body, and it also plays a role in healthy immune system response. No wheat, yeast, gluten, corn, soy, dairy, egg, salt, sugar, starch, preservatives, or artificial color, flavor or fragrance.