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vitamin B complex

A group of 12 substances that includes the eight vitamins known as These eight vitamins, like vitamin C, are soluble in water. (In contrast, vitamins A, D, E, and F are fat-soluble.) The B vitamins were once thought to be a single vitamin – vitamin B. Although now known to be chemically distinct they do tend to occur together in the same foodstuffs and are also related in that they all play important roles in cell metabolism.

Other substances making up the vitamin B complex, although not classified as vitamins, are chemically related to the eight types of B vitamin listed above. These include
  • choline
  • inositol
  • para-aminobenzoic acid (PABA)

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