Nutra Bio's B-100 Complex consists of B1, B2, B3, B5, B6, and B12. B1, also known as thiamine, is an anti stress vitamin and also helps breakdown carbohydrates into glucose. B2, also known as riboflavin, helps with repair of the skin and gastrointestinal lining. B3, Niacin, plays many different roles within the body. Some are promoting healthy cholesterol levels, brain health, and converting food into cellular energy. B5, also known as pantothenic acid, helps with the body's energy metabolism and aids in growth & reproduction. B6, Pyridoxine, is needed for protein metabolism and red blood cell metabolism. B12, methylcobalamine, helps with maintaining healthy red blood cells and nerve cells.
As you can see, the Nutra Bio Vitamin B-100 Complex can cover a lot of basis.