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Previous Volume 345:66-67 July 5, 2001 Number 1 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: As a group, fat-soluble vitamins are lifesaving at physiologic levels and dangerous at megavitamin levels.¹ For many people the word "vitamin" implies something that is beneficial and essential, not potentially poisonous.² More than one third of people in the United States regularly use dietary supplements.³ We describe a patient with hypercalcemia associated with the ingestion of an over-the-counter vitamin D supplement.

A 42-year-old man was hospitalized with symptoms of hypercalcemia of a few weeks' duration. For the past two years, he had been taking a supplement that contained vitamin D₃. On admission his serum levels were . . . [Full Text of this Article]

References

This article has been cited by other articles:

• Holick, M. F. (2007). Vitamin D Deficiency. NEJM 357: 266-281 [Full Text]  
• Klontz, K. C., Acheson, D. W. (2007). Dietary Supplement-Induced Vitamin D Intoxication. NEJM 357: 308-309 [Full Text]  
• Shinchuk, L., Holick, M. F. (2007). Vitamin D and Rehabilitation: Improving Functional Outcomes. Nutr Clin Pract 22: 297-304 [Abstract] [Full Text]  
• Hathcock, J. N, Shao, A., Vieth, R., Heaney, R. (2007). Risk assessment for vitamin D. Am. J. Clin. Nutr. 85: 6-18 [Abstract] [Full Text]  
• Vieth, R. (2006). Critique of the Considerations for Establishing the Tolerable Upper Intake Level for Vitamin D: Critical Need for Revision Upwards. J. Nutr. 136: 1117-1122 [Abstract] [Full Text]  
• Leventis, P., Garrison, L., Sibley, M., Peterson, P., Egerton, M., Levin, G., Kiely, P. (2005). Underestimation of Serum 25-Hydroxyvitamin D by the Nichols Advantage Assay in Patients Receiving Vitamin D Replacement Therapy. Clin. Chem. 51: 1072-1074 [Full Text]