1000 mcg 250 nuggets
Retail Price: $25.75
Your favorite Life Extension® products can be delivered to you automatically. Just look for the “AutoShip” button. Select AutoShip, and choose your preferred ship-out date. It's that easy!
Vitamin B12 is present in foods of animal origin, including dairy products and eggs. Thus, vegetarians are more susceptible to a dietary deficiency of this important nutrient. Likewise, vitamin B12 serum concentrations are reported to be significantly lower in elderly population groups compared to younger groups.1-4 It is estimated that 10% to 30% of individuals over the age of 50 have low stomach acid secretion5,6 which results in decreased bioavailability of vitamin B12 from food. To overcome food-bound vitamin B12 malabsorption problems, the Institute of Medicine recommends that vitamin B12-fortified foods (such as fortified ready-to-eat breakfast cereals) or supplements containing vitamin B12 be used to meet much of the requirement.7 Vitamin B12, or cobalamin, works synergistically with vitamin B6 and folate to regenerate (methylate) the amino acid methionine, which helps to maintain already healthy homocysteine levels within normal range, which is important for heart health.8-11 Cyanocobalamin is a synthetic and inexpensive form of vitamin B12 that is converted in the body to its bioactive forms, methylcobalamin and cobamamide.
1. Am J Clin Nutr. 1999;70:904-910.
2. Am J Clin Nutr. 1994;60:2-11.
3. Am J Clin Nutr. 1994;60:12-14.
4. Prev Med. 2004 Dec;39(6):1256-66.
5. JAMA. 1997 Aug 27;278(8):659-62.
6. J Am Geriatr Soc. 1986 Nov;34(11):800-6.
7. Epidemiology. 2007 May;18(3):367-8.
8. Handb Exp Pharmacol. 2005;(170):325-38.
9. Altern Med Rev. 2003 Feb;8(1):7-19.
10. Lancet. 2002 Jan 19;359(9302):227-8.
11. Asia Pac J Clin Nutr. 2007;16(1):103-9.
|Dosage and Use|
If you are pregnant, nursing, taking any medication or have a medical condition, please consult your healthcare practitioner before taking any dietary supplement. Keep out of reach of children. Store in a cool, dry place. Do not use if outer bottle seal is missing, torn or damaged in any way.
Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.