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Vitamin D

This article was originally published in The Tan Sheet

Executive Summary

Consumers should remember "fat-soluble vitamins are lifesaving at physiologic levels and dangerous at megavitamin levels," Boston University researchers warn in letter to the editor in July 5 New England Journal of Medicine. Polyxeni Koutkia, MD, et al., report case in which 42-year-old man was hospitalized with symptoms of hypercalcemia due to excessive intake of vitamin D supplements. Three separately obtained samples of product manufactured by Canadian firm Prolongevity were found to contain 26-430 times amount of D3 claimed on label. Listed amount was 2,000 IU of vitamin D per gram of powder, IoM's recommended daily upper limit. Patient had consumed 3 mg daily, resulting in intake 78-1,302 times the UL
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