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John Morey wrote: > In the article, the author says take a min. of 200 mg/day, yet most vitamin > E is measured in iu not mg. What is the conversion factor? > Hi John,Vitamin E is available both in natural and synthetic forms. Furthermore, there are two groups of compounds which have vitamin E activitity -- tocopherols and tocotrienols. The synthetic form has slightly lower biological activity than the natural form, so scientists wanted to find a term that could be used worldwide to measure vitamin E activity in all types of compounds. They came up with "alpha-tocopherol equivalent." One mg d-alpha tocopherol = 1 alpha-TE. And 9 mg = one IU (International Unit). Therefore 200 mg = 22.2 IU. Best, Kathrynne -- Kathrynne Holden, MS, RD "Nutrition you can live with!" Medical nutrition therapy Tel: 970-493-6532 // Fax: 970-493-6538