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How Much Vitamin D Constitutes and Overdose?

April 26, 2017constitutes overdose vitamin d

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How Much Vitamin D Constitutes and Overdose?

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A blood test is the only method available to determine excess vitamin D intake from supplements or cod liver oil. Research is ongoing regarding vitamin D levels that are needed for maximum health benefits. Serum 25-Hydroxyvitamin D [25(OH)D] levels consistently higher than 200 ng/ml (nanograms per milliliter) can cause vitamin D toxicity signs, including seizure-like activity (tetany) from high serum calcium levels that lead to changes in mental status and heart rhythm disturbance.