How Much Vitamin E Does An Adult Need? According to the National Institutes of Health (NIH), the U.S. Recommended
Daily Allowance (RDA) for adults older than 14-years is 15 mg (or 22.4 IU); pregnant women of any age
should get 15 mg (or 22.4 IU); and breastfeeding women of any age
should take 19 mg (or 28.4 IU).
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