ビタミンD3は骨密度、肌の健康などに必要なビタミンで、身体が日光に当たることによって自ら生成することができるが日光に当たることが少ない現代の生活では不足している人が驚くほど多い。毎朝1カプセル食事と一緒に摂取。　

Vitamin D3 (as cholecalciferol) is a fat-soluble vitamin that's naturally present in very few food sources. It has many functions in the body from contributing to bone health to supporting immune function. NutraBio Vitamin D3 is the same form of Vitamin D3 the body manufactures when skin is exposed to ultraviolet (UV) sunlight. Vitamin D3 may be more than three times as effective than other forms of Vitamin D3 in raising concentrations in the bloodstream and maintaining those levels for a longer time.*