Who originally lettered all of the vitamins? What are the letters supposed to mean? Why are there two vitamin Bs?
by 
Violin34
ANSWERS: 2
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Cool question.
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They lettered them as they discovered them. There are many more than 2 Bs. There are 6-8 of them. They originally were thought to be just one vitamin but over time they realized that they were made up of several different compounds, thus making B1, B2 and so on.
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