Recommended Dietary Allowance (RDA) for most adults of 600 IU of vitamin D a day.ĭoses higher than the RDA are sometimes used to treat medical problems such as vitamin D deficiency, but these are given only under the care of a doctor for a specified time frame. This level is many times higher than the U.S. Taking 60,000 international units (IU) a day of vitamin D for several months has been shown to cause toxicity. Your doctor might also prescribe intravenous fluids and medications, such as corticosteroids or bisphosphonates.
Treatment includes stopping vitamin D intake and restricting dietary calcium. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones.
The main consequence of vitamin D toxicity is a buildup of calcium in your blood (hypercalcemia), which can cause nausea and vomiting, weakness, and frequent urination.
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