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Vitamin D toxicity. Cholecalciferol (shown above) and ergocalciferol are the two major forms of vitamin D. Specialty. Endocrinology, toxicology. Vitamin D toxicity, or hypervitaminosis D, is the toxic state of an excess of vitamin D. The normal range for blood concentration in adults is 20 to 50 nanograms per milliliter (ng/mL).
Vitamin D 5. sitocalciferol. (made from 7-dehydrositosterol) Several forms (vitamers) of vitamin D exist, with the two major forms being vitamin D 2 or ergocalciferol, and vitamin D 3 or cholecalciferol. [ 1 ] The term 'vitamin D' refers to either D 2 or D 3, or both, and is known collectively as calciferol.
Research has shown that vitamin D3 tends to be more effective than vitamin D2 supplementation when trying to increase serum vitamin D levels, says Pelitera. “In bloodwork, we measure Vitamin D ...
A much less common use of cholecalciferol therapy in rickets utilizes a single large dose and has been called stoss therapy. [28] [29] [30] Treatment is given either orally or by intramuscular injection of 300 000 IU (7500 μg) to 500 000 IU (12 500 μg = 12.5 mg), in a single dose, or sometimes in two to four divided doses. There are concerns ...
READ MORE. How much vitamin D do I need? Older adults need about 600 to 800 IU of vitamin D daily, depending on their age. You can get this through a combination of sun exposure and vitamin-D rich ...
Both vitamin D2 and D3 are good, but “D3 has better bioavailablilty,” says Dr. Manson, meaning that it’s more easily used by your body. But that doesn’t mean any old brand will do.