The vitamin B supplement you take is a mixture of nutrients that, although they share the same vitamin letter, are in fact distinctly different chemical entities. The reason that they share the same reference letter of the alphabet is that they are all essential water soluble vitamins (Vitamin C being the only other), they frequently work in synergy with each other and they often come from common sources and have similar properties in the body. They were therefore at one time believed to be just the one chemical entity.

They are essential in that they must form part of our diet because our bodies cannot manufacture these substances from others, and although most share common biochemical and health functions, there is no health function that requires all of them, and none of them can be totally replaced by another.

The B-Vitamin complex that you take can consist of as many as eight different B vitamins, each of which is essential for a healthy body and at one time it was believed that this mixture was only one single vitamin. That is why they are collectively known as vitamin B and were subsequently allocated numbers: it was only later that the individual components were discovered.

These eight are vitamin B-1 (thiamine), vitamin B-2 (riboflavin), vitamin B-3 (niacin), vitamin B-5 (pantothenic acid), vitamin B-6 (pyridoxine), vitamin B-12 (cobalamins), biotin and folic acid (folate). They are found in yeast, liver, tuna, bananas and rice among other sources, and, as with all vitamins, without them life would not be possible. Not all vitamins are found in each of these food sources, and vitamin B-12, for example, is available in nutritional quantities only from animal sources.

Knowing what they are is all very well, but what does your body do with the B vitamin supplement that you take? Before considering that, the reason that a regular supply is important is because of their water solubility. This is a useful property for a vitamin to possess, because it means that they can easily be transported by the body fluids to the tissues where they are needed. The downside, however, is that they are consequently also easily flushed from the body, and your body cannot store any of the B vitamins.

You therefore must have a regular dietary source that can be augmented through supplementation. This is particularly desirable in alcoholics, those on diets to lose weight and vegans who are advised to take a regular vitamin B-12 supplement.

A lack of vitamin B will make you feel tired and lack energy because they play a big part in your body’s metabolism of blood Glucose into energy. They also help to maintain a healthy immune system, keep your nervous system in tip-top condition and maintain good healthy skin, hair and muscles. The B complex is also very important in maintaining healthy blood and liver, and each and every component of the mixture has a specific part to play, both on individually and by interaction with others in the B complex.

Rather than examining what your body does with the supplement as a whole, let’s have a look at each component, and what your body does with that. Taking them one at a time, thiamine (B1) helps you to burn carbohydrates to generate energy. It is highly water soluble and must be taken daily. In the form of thiamine pyrophosphate it plays a key part in the metabolism of carbohydrates to energy, and also in the metabolism of certain amino acids. If you rely heavily on a high Carbohydrate diet, you will need a good regular supplement of thiamine to be able to convert them to energy.

Vitamin B2 (riboflavin) also plays a part in fat and carbohydrate metabolism and the formation of adenosine triphosphate (