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Liquid Vitamin D3 | 2,000 IU, 1 fl. oz. (29.57 ml) - Online Health Store | Vitamins Online | Supplements Online Expert Nutrition Center
Vitamin D3 can be synthesized by humans in the skin upon exposure to ultraviolet-B (UVB) radiation from sunlight. But, due to the winter season, weather conditions, and sun screen usage, the bodys ability to produce optimal vitamin D levels may