T J Clark Complete B Liquid contains B vitamins that are the catalytic spark plugs of the body; they function as coenzymes to catalyse many biochemical reactions. The chief function of B vitamins is in converting glucose to energy, which fuels the body and B vitamins are also important in fat and amino acid metabolism, the nervous system, hormonal regulation, gastrointestinal tract, liver function and the hair, eyes and nails. T J Clark's is suitable for children in a great tasting fruit flavour.