To the Editor: Vitamin D intoxication that is associated with the consumption of dietary supplements is reported rarely.1 In 2004, the Food and Drug Administration (FDA) learned of the following case. A 58-year-old woman with diabetes mellitus and rheumatoid arthritis began taking a dietary supplement called Solutions IE Ageless Formula II on January 12, 2004. Fatigue, constipation, back pain, forgetfulness, nausea, and vomiting soon developed. On March 15, 2004, she was hospitalized because her speech was slurred, and a blood glucose reading taken at home was 30 mg per deciliter. On admission, her serum levels were as follows: calcium, more . . .

Dietary supplements can cause vitamin D intoxication, causing fatigue, constipation, back pain, forgetfulness, nausea, and vomiting, and should be carefully evaluated for potential risks.

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Dietary supplement-induced vitamin D intoxication.

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