Vitamin D3 helps regulate calcium and maintain phosphorusso important for our bones! And though we naturally produce vitamin D when our skin is exposed to the sun, other factors can cloud the sun-ray absorption like, well, clouds. Pollution and even the season of the year can also tap the brakes on full absorption, so a vitamin D supplement helps ensure youre getting the required amount.Benefits: 500% Daily Value (DV) of Vitamin D3; 2000 IU Supports a healthy immune system Provides bone support Gluten-free