Vitamin E Toxicity

Sources, Functions, and Effects of Vitamins

Plasma tocopherol levels vary with total plasma lipid levels. Normally, the plasma alpha-tocopherol level is 5 to 20 mcg/mL (11.6 to 46.4 mcmol/L).

tardive dyskinesia is controversial. There is no convincing evidence that doses of up to 2000 units/day slow the progression of Alzheimer disease1).

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(See also Overview of Vitamins.)