Ask Ray | Studies on multivitamins may not be well constructed

... oxidation. Vitamin A is potentially harmful, people should take its precursor Beta Carotene. What goes for "Vitamin E" in most commercial formulations is not vitamin E at all but Alpha Tocopherol, which is only one of the eight factions of vitamin ...

http://www.kurzweilai.net/ask-ray-studies-on-multivitamins-may-not-be-well-constructed