With some vitamins, taking too much probably will not cause serious problems. However, this is not the case with vitamin A. Significant toxicity may occur with an overdose. An overdose may occur as the result of a single, one-time massive overdose as well as from just taking a little too much on a regular basis.
Written by/reviewed by: Kristi Monson, PharmD;Arthur Schoenstadt, MD
Last reviewed by: KristiMonson, PharmD;
List of references (click here):
Jellin JM, editor. Pharmacist's Letter/Prescriber's Letter Natural Medicines Comprehensive Database Web site. Available at: http://naturaldatabase.com/. Accessed October 6, 2008.
National Institutes of Health. Office of Dietary Supplements. Dietary supplement fact sheet: Vitamin A and carotenoids (4/23/2006). NIH Web site. http://ods.od.nih.gov/factsheets/vitamina.asp. Accessed October 7, 2008.
Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002. Available at: www.nap.edu/books/0309072794/html/. Accessed October 6, 2008.
Briggs GG, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 7th ed. Philadelphia (PA): Lippincott Williams & Wilkins;2005.
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