People can choose between different nutrients or a mix of several, such as electrolytes, glutathione, saline, and vitamins B12 and C. One IV vitamin therapy lasts 30 minutes to one hour. The other way to get your vitamin D filled is through the sun. Dr. Andrew Ordon, MD, host of the Emmy Award-winning show "The Doctors," explains that the body produces vitamin D when the skin is The primary function of vitamin D is to help the body absorb calcium and phosphate, thus keeping muscles and teeth healthy and bones strong and less likely to break. However, vitamin D is also Production in Skin. Upon exposure to UVB radiation, previtamin D 3 is synthesized from 7-DHC in the skin, primarily in keratinocytes of the stratum basale and stratum spinosum layers of the epidermis. Previtamin D 3 isomerizes to form vitamin D 3 (cholecalciferol), which is subsequently transported into the circulation via a binding protein (11). Treatment with a magnesium supplement led to an increase in vitamin D levels in people who had low levels initially, but it reduced levels of the sunshine vitamin in those with high levels. This Vitamin C supplements can help improve the absorption of iron from the diet. Vitamin C assists in converting iron that is poorly absorbed, such as plant-based sources of iron, into a form that is Vitamin D . Vitamin-D toxicity, although rare, can occur in individuals taking large doses of vitamin-D supplements with a heavy intake of fortified foods. The majority of symptoms of hypervitaminosis D stem from hypercalcemia caused by excessive calcium absorption in the duodenum and distal convoluted tubule. Vitamin D enhances absorption of calcium in the small intestine and stimulates osteoclast differentiation and calcium reabsorption of bone. Vitamin D additionally promotes mineralization of the collagen matrix in bone. In humans, vitamin D is obtained from the diet or it is synthesized it in the skin (reviewed in ). As vitamin D is cutaneously .

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