VITAMIN D3 5000IU – 365 TABLETS – HIGH STRENGTH PHARMA GRADE – IMMUNE SUPPORT –

The words“Vitamin D” refers to not one, butseveral forms of Vitamin D. There are biologically inactive forms ofVitamin D - Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol). It regulates the cells whichbuild and maintain bones.