RE: How much B-12 do I need?
Posted Wednesday, September 28, 2011 at 4:36 AM
PCRM has a fact sheet about this you can read at
Basically it says that -
Regular intake of vitamin B12 is important to meet one’s nutritional needs. The recommended dietary allowance in adults is 2.4 micrograms per day, with increased requirements for women who are pregnant or breastfeeding. Ensuring that vitamin B12 needs are met as one ages becomes even more critical as deficiencies are common among the elderly. Symptoms of deficiency may include fatigue, weakness, tingling in the arms and legs, digestive disturbances, and a sore tongue, and may lead to anemia and more serious disorders of the blood and nervous system.
I hope this helps. If you go to the full fact sheet it tells you how to get enough B12.
Let food be thy medicine and medicine be thy food - Hippocrates.