B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism. In general, supplements containing all eight are referred to as a B complex.
Supplements containing all eight are referred to as a vitamin B complex. They include: Thiamin (B1), Riboflavin (B2), Niacin (B3), Pantothenic acid (B5), Biotin (B7), Vitamin B6 (Pyridoxine) Folate (B9 - called Folic Acid when included in supplements), Vitamin B12 (Cyanocobalamin). Each B vitamin is either a cofactor (generally a coenzyme) for key metabolic processes or is a precursor needed to make one.
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