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Methylcobalamin (mecobalamin, MeCbl, or MeB 12) is a cobalamin, a form of vitamin B 12. It differs from cyanocobalamin in that the cyano group at the cobalt is replaced with a methyl group . [ 1 ] Methylcobalamin features an octahedral cobalt(III) centre and can be obtained as bright red crystals. [ 2 ]
A blister pack of 500 μg methylcobalamin tablets Vitamin B 12 is included in multivitamin pills; in some countries grain-based foods such as bread and pasta are fortified with B 12 . In the US, non-prescription products can be purchased providing up to 5,000 μg each, and it is a common ingredient in energy drinks and energy shots , usually at ...
Vegans, and to a lesser degree vegetarians, are at risk for B 12 deficiency if they do not consume either a dietary supplement or vitamin-fortified foods. Children are at a higher risk for B 12 deficiency due to inadequate dietary intake, as they have fewer vitamin stores and a relatively larger vitamin need per calorie of food intake. [136]
️ Seek out methylcobalamin. Most vitamin B12 supplements contain cyanocobalamin, which contain trace amounts of cyanide, Somer says. It’s also far less efficient than supplements made with ...
Cobalamin biosynthesis is the process by which bacteria and archea make cobalamin, vitamin B 12. Many steps are involved in converting aminolevulinic acid via uroporphyrinogen III and adenosylcobyric acid to the final forms in which it is used by enzymes in both the producing organisms and other species, including humans who acquire it through ...
Because they are soluble in water, excess B vitamins are generally readily excreted, although individual absorption, use and metabolism may vary. [7] The elderly and athletes may need to supplement their intake of B 12 and other B vitamins due to problems in absorption and increased needs for energy production.
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