Last update: 2.5.2017.
The natural D vitamin
Supplement Watch - Vitamin D3
Other name(s) for Vitamin D3
General information for Vitamin D3
People synthesize vitamin D3 when UVB light from the sun strikes the skin. Also many fish are good sources of vitamin D3. Although vitamin D2 is accepted as a good alternative but D3 is the type to buy for several reasons For example D3 is the form that is produced when UVB light contacts our skin. Also many vitamin D3 is more difficult to overdose than D2. Vitamin D3 has been tested more in clinical trials. Vitamin D3 is more effective at raising and maintaining the vitamin D levels in the bloodstream.
Solubility of Vitamin D3
Take care when supplementing with fat soluble vitamins.
Benefits of Vitamin D3
Helps maintain normal blood levels of calcium and phosphorus, which strengthen bonesHelps form teeth and bonesSupplements can reduce the number of non-spinal fractures
Deficiency symptoms / disease
Overdose symptoms / disease
The threshold for vitamin D toxicity has not been established. There is defined a tolerable upper intake level however. Vitamin D overdose is rare and it is usuallyt caused by supplementing with high doses of vitamin D rather than sunlight exposure.
FDA information for Vitamin D3
(Daily value/Recommended dietary allowance/Adequate intake)
Recommended intakes of nutrients vary by age and gender and are known as Recommended Dietary Allowances (RDAs) and Adequate Intakes (AIs). However, one value for each nutrient, known as the Daily Value (DV), is selected for the labels of dietary supplements and foods. A DV is often, but not always, similar to one's RDA or AI for that nutrient. DVs were developed by the U.S. Food and Drug Administration (FDA) to help consumers determine the level of various nutrients in a standard serving of food in relation to their approximate requirement for it. The label actually provides the %DV so that you can see how much (what percentage) a serving of the product contributes to reaching the DV.
Look at daily value in the main vitamin page.
Food sources for Vitamin D3
Look at food sources in the main vitamin page