Vitamin D-3

Vitamin D-3 from Source Naturals is a bioactive form of vitamin D specifically for bone and immune health support. Sunlight is the source of life on Earth, but we may not be aware of all the ways it may benefit us. Our bodies manufacture vitamin D3 when the skin is exposed to UV radiation from sunlight, but the ability to do so decreases as we age. Vitamin D3 maintains healthy calcium and phosphorous levels in the body for strong bones, and new research is being done to investigate its potential role in immune health support. Vitamin D3 (cholecalciferol) is the form the body naturally manufactures, and it is the form most efficient for the body's needs.