Vitamin D3 5,000 IU
Natural Factors gives a healthy dose of 5,000 IU of D3. Buy 1, get 1!
(Natural Factors) D3 has been in the news for its ability to activate the immune system’s “T” cells, to ensure the absorption of calcium and even regulate insulin. Higher levels of D3 are associated with prevention of different types of arthritis, heart disease, and cancers. 4 month supply.