what is vitamin d complex?
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Vitamin D Complex features a generous dose of vitamin D, along with efficacious amounts of the other fat-soluble vitamins, A, E (tocopherols and tocotrienols), and K (K1 and K2).
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Vitamin D is a nutrient needed for health and to maintain strong bones. Vitamin D aids in the absorption of calcium and phosphorus in our bodies, helps bring calcium and phosphorus to our bones and teeth, and helps regulate how much calcium remains in our blood.
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There are two main kinds of vitamin D—D2 (ergocalciferol) and D3 (cholecalciferol). D2 is found in plant foods, including fungi like mushrooms and yeasts. D3 is only available in animal foods, and it's the type of vitamin D your body makes on its own when it's exposed to UV light.
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 There's good reason why vitamin D is called “the sunshine vitamin.” When your skin is exposed to sunlight, it makes vitamin D from cholesterol. The sun's ultraviolet B (UVB) rays hit cholesterol in the skin cells, providing the energy for vitamin D synthesis to occur.
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Vitamin D is a hormone the kidneys produce that controls blood calcium concentration and impacts the immune system. It is also known as calcitriol, ergocalciferol, calcidiol and cholecalciferol.
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Vitamin D3, also known as cholecalciferol is generated in the skin of animals when light energy is absorbed by a precursor molecule 7-dehydrocholesterol. Vitamin D is thus not a true vitamin, because individuals with adequate exposure to sunlight do not require dietary supplementation.
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Vitamin D helps regulate the amount of calcium and phosphate in the body. These nutrients are needed to keep bones, teeth and muscles healthy. A lack of vitamin D can lead to bone deformities such as rickets in children, and bone pain caused by a condition called osteomalacia in adults.
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What kind of vitamin D is best? The recommended form of vitamin D is vitamin D3 or cholecalciferol. This is the natural form of vitamin D that your body makes from sunlight. Supplements are made from the fat of lambs' wool.
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Vitamin D deficiency is defined if serum hydroxyvitamin D levels are less than 50nmol/L (20 ng/ml), insufficiency as 50-75 nmol/L (20-30 ng/ml). Studies demonstrate that vitamin D is essential also for overall health and well-being.
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Vitamin D: Vitamin D is very well known and important vitamin, but it is particularly important in patients who have kidney disease. Here are some important facts about Vitamin D and kidney patients: Low vitamin D levels are seen in most people with kidney disease, even those on dialysis11,12.
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Vitamin D supplements or multivitamins containing vitamin D may be appropriate if your diet doesn't include enough food sources of this important vitamin. Selenium. Selenium is an essential mineral that plays several important functions in the body, including the metabolism of thyroid hormones.
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“Vitamin D is commonly prescribed for hypoparathyroidism [a condition that causes calcium deficiency, muscle cramps and spasms, weakness, and fatigue],” says Dr. Lukyanovsky. “Doctors might also prescribe it for osteomalacia, a condition where there's a depletion of calcium from the bone.”
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The recommended form of vitamin D is vitamin D3 or cholecalciferol. This is the natural form of vitamin D that your body makes from sunlight. Supplements are made from the fat of lambs' wool. However, a clinical study reported in 2008 suggested that vitamin D2 works as well as vitamin D3.
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Vitamin D is commonly known as ergocalciferol (Vitamin D2) and cholecalciferol (Vitamin D3). Vitamin D2 and D3 are broken down to their active form, calcitriol, in the body.
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Vitamin D, in the form of 1,25-dihydroxyvitamin D3, helps to regulate several types of cells in the immune system, including monocytes, macrophages, dendritic cells and acti- vated T cells, and it helps prevent autoimmune responses.
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The Vitamin D Council (Cholecalciferol Council) is a group of concerned citizens that believe many humans are needlessly suffering and dying from Vitamin D deficiency. Their goal is to educate the public and professionals about vitamin D deficiency and the numerous diseases associated with that deficiency.
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Vitamin D Researchers have found that vitamin D deficiencies are common in patients with chronic pain, and deficiency symptoms can include fatigue and muscle aches. (3) Vitamin D3 is the most bioavailable form, is quickly absorbed, and is rarely found in foods.