Ultra Vitamin D provides effective levels of the preferred form of vitamin D3 (cholecalciferol). Ultra Vitamin D provides British Pharmacopoeia quality vitamin D3. Optimum Strength Vitamin D3. Vitamin D is a fat-soluble vitamin found in foods such as mushrooms, oily fish, butter and egg yolk.Vitamin D has functions and benefits that are probably more wide-ranging than any other vitamin.
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