Humans can synthesize vitamin D3 in the skin upon exposure to ultraviolet-B (UVB) radiation from sunlight. But, due to the winter season, weather conditions, and sunblock, the bodys ability to produce optimal vitamin D levels may be inhibited. These factors point to the value of taking a daily vitamin D supplement.
D VITAMINS, VITAMINS A - Z
Life Extension, Vitamin D3 25mg (1,000 IU), Gluten Free, NON GMO, Dietary Supplements, 250 Softgels
$10.99