Natural Factors Vitamin D3 NPN 80004328 Natural Factors Vitamin D3 is an active form derived from sheep wool lanolin and is considered to be the most natural form. Offering a 1000 IU potency, Natural Factors D3 is HPLC tested for optimum purity and potency. Important for the proper absorption of calcium, strengthening bones and teeth, promoting good cardiovascular health and protects against osteoarthritis and osteoporosis. |
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