The various forms of vitamin K are all fat-soluble molecules, each with the same methylated naphthoquinone ring structure. The two main forms of vitamin K are vitamin K1 and vitamin K2.

The chemical structure of niacin was discovered in 1937 by Conrad Arnold Elvehjem. ... Vitamin B12, or cobalamin, is required in the metabolism of a number of biomolecules, ...

Allergic reactions to vitamin B12 are rare, but real. The reason may sound strange, but it's true - an allergy to cobalt. What's going on here? ... To be fair to Hari, I do not know one organic ...

Vitamin B12 is made by microorganisms that are found in the soil and in water. Humans can’t produce B12 by themselves so rely on these natural sources for the levels they need to function optimally.

Vitamin B12, also called cobalamin, has the most complex and largest chemical structure of all vitamins. This crucial compound is usually considered safe. However, excess consumption of Vitamin ...

Hallberg et al, Soil microbial community response to corrinoids is shaped by a natural reservoir of vitamin B12, The ISME ...

Since the dawn of the Internet (and probably well before), there have been several solutions sold for weight management — including vitamins for weight loss. One in particular, vitamin B12 ...

Vitamin B12 is an essential nutrient for our bodies. Here's how to be sure you're getting enough of it. Sean Jackson Sean Jackson is a creative copywriter living in Florida. He's had work ...

Vitamin B12 can contribute to energy, mood, cognitive function and heart health. Read more about the benefits, deficiencies and how much you need.

Citation: 'Healthy' vitamin B12 levels not enough to ward off neuro decline: Experts call for new recommendations for older adults (2025, February 19) retrieved 30 June 2025 from https ...

Methylmalonic Acid Test Results. You may have a vitamin B12 deficiency if you have higher than normal levels of MMA. The tests don’t reveal exactly how serious your deficiency is.

Vitamin B12 (cobalamin) is essential for the health of nerve tissue, brain function, and red blood cells. Sources include meat, eggs, and some yeast products.