Selecting the Appropriate Formulation Choosing the right B12 formulation depends on several factors
This guide is written for both laboratory scientists and research professionals who need a thorough scientific reference, and for scientifically curious individuals who want to understand the biochemistry behind this compound and why it continues to generate active research interest
Unlike many nutrients, B12 is produced exclusively by bacteria and obtained primarily through animal-based foods including meat, fish, eggs, and dairy products
It is difficult to overdose on vitamin B6, however, as the established upper limit for adults is 100 milligrams a day
In severe cases, a deficiency can even lead to a swollen and inflamed tongue and mouth, known as glossitis
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