Pure Essentials Vegan Vitamin D3 is a natural plant-based extract from lichen, a type of fungi that provides cholecalciferol – the most biologically active form of vitamin D that is easily absorbed by the body and taken up into the bloodstream. Small tablets deliver 1000 IU of vitamin D3, suitable for everyday use throughout the year. Excessive doses of vitamin D3 can upset the delicate ratio of calcium and vitamin D in the body, so higher doses should only be taken for acute periods as needed.
As vitamin D3 is synthesised in the skin via exposure to sunlight, our production capacity is impaired when sun exposure is limited. Supplementation is therefore considered to be the most effective way to optimise consistently healthy blood levels throughout the year.
There are two forms of vitamin D supplement: vitamin D2 and vitamin D3. Vitamin D3, also known as cholecalciferol, is the most biologically active form of the two, is readily absorbed and therefore easily utilised by the body. Vitamin D3 is a hormone-like vitamin that, as well as playing a role in cell division, contributes to normal muscle function and to the normal functioning of the immune system. Vitamin D3 is best known for the role it plays in supporting healthy bones and teeth and this is because vitamin D3 is required to maintain normal blood levels of calcium. As a fat-soluble vitamin, the body can struggle to expel vitamin D3 if taken in high amounts for too long. Any excess vitamin D3 is converted by the liver to a pre-hormone called calcifediol which can cause high levels of calcium to develop in the blood, a condition called hypercalcaemia. Taking smaller doses of vitamin D3, no more than 2000IU, helps to ensure an optimal vitamin D3 to calcium ratio is maintained, thus preventing potential issues surrounding abnormally high levels of calcium that can result from regular intake of high dose vitamin D3.