Vitamin E

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Vitamin E Side Effects, Interactions and Warnings



  • Patients should be cautioned concerning supplements of vitamin E used chronically or ingested in large quantities because it can interfere with oral anticoagulants.
    - J Am Diet Assoc 1995 May;95(5):580-4 -- Interaction of dietary factors with oral anticoagulants: review and applications. -- Harris JE.

  • Vitamin E has been associated with documented reports of potential interactions with warfarin.
    - Am J Health Syst Pharm 2000 Jul 1;57(13):1221-7; quiz 1228-30 -- Potential interactions between alternative therapies and warfarin. -- Heck AM, DeWitt BA, Lukes AL.

  • Vitamin E may cause a drop in blood sugar levels.
    - Am J Clin Nutr 1993 May;57(5):650-6 -- Pharmacologic doses of vitamin E improve insulin action in healthy subjects and non-insulin-dependent diabetic patients. -- Paolisso G, D'Amore A, Giugliano D, Ceriello A, Varricchio M, D'Onofrio F

  • Vitamin E may interfere with the effectiveness or toxicity other medications and should be used with caution.




Nutrient Values
Fruits Vegetables Fish and Seafood Meat and Poultry Nuts

  • Nutrition Information








  • last update: February 2014



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