If you have low levels of vitamin B12, you may feel weak, have less energy, and experience slow thinking -- a condition called pernicious anemia. People who eat a plant-based diet vegans are at greater risk because animal products often contain vitamin B12 naturally. Older people are at higher risk of a vitamin B12 deficiencytoo, because your body has a harder time absorbing the vitamin as you age.
This article examines the scientific evidence behind recommended dosages for B12 for different people and uses. Additionally, vitamin B12 is important for energy production. Vitamin B12 is found mostly in animal products, including meats, seafood, dairy products and eggs.
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Vitamin B cobalamin is a water-soluble vitamin that plays essential roles in red blood cell formation, cell metabolism, nerve function and the production of DNA. Food sources of vitamin B include poultry, meat, fish and dairy products. Vitamin B is also added to some foods and is available as an oral supplement.
Vitamin B12 dosages: how much vitamin B12 should you take? Why are there so many different recommendations? Which dosage of vitamin B12 is correct?
Medically reviewed by Drugs. Last updated on Nov 12, Methylcobalamin has been used as a supplement in patients with vitamin B 12 deficiency and in those with diabetes and other neuropathies.
In it was discovered that patients with pernicious anaemia could be saved from a certain death by eating a pound of raw liver a day. More than 20 years later the substance that was responsible for that was isolated from liver extract: vitamin B12 or cobalamin. Since then numerous patients have been treated with high dose vitamin B12 worldwide. Usually per injection and often lifelong, as a deficiency is mostly caused by an irreversible absorption disorder.
It is found in a variety of foods such as fish, shellfish, meats, and dairy products. Although methylcobalamin and vitamin B12 are terms used interchangeably, vitamin B12 is also available as hydroxocobalamin, a less commonly prescribed drug product see Hydroxocobalamin monographand methylcobalamin. Methylcobalamin is used to treat pernicious anemia and vitamin B12 deficiency, as well as to determine vitamin B12 absorption in the Schilling test.