Because most of the food sources of vitamin E are foods that aren't consumed in large amounts, a therapeutic level of vitamin E may be achieved only with supplements.
Update Date 2/18/2013
Updated by: Alison Evert, MS, RD, CDE, Nutritionist, University of Washington Medical Center Diabetes Care Center, Seattle, Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.