The vitamin B-Komplex includes the various water-soluble vitamins of the B vitamin group. These vitamins play an important part in the pre-stages of the coenzyme-metabolism and are involved in the normal metabolism of fats, protein and carbohydrates and therefore contribute to a normal energy metabolism. According to the European Food Safety Authority (EFSA) the B vitamins have also individually a health-promoting effect.
Thiamin (Vitamin B1) contributes for example to normal psychological functions, to the normal function of the heart and to the normal function of the nervous system.
Riboflavin (Vitamin B2) contributes to the normal metabolism of iron in the body and the maintenance of normal vision. Furthermore, it contributes to the protection of cell constituents from oxidative damage.
Niacin (Vitamin B3) contributes to the normal function of the nervous system, the maintenance of normal skin and mucous membranes, and can contribute to the reduction of tiredness and fatigue.
Pantothenic acid (Vitamin B5) contributes to a normal mental performance and can contribute to the reduction of tiredness and fatigue. In addition, it also contributes to a normal synthesis and metabolism of steroid hormones, vitamin D and some neurotransmitters.
Pyridoxine (Vitamin B6) contributes to normal psychological functions, the regulation of hormonal activity and normal red blood cell formation.
Biotin (Vitamin B7) contributes to the maintenance of normal skin, mucous membranes and hair, the normal psychological functions and the normal function of the nervous system.
Folate (Vitamin B9) contributes to normal homocysteine metabolism and normal cell division. Furthermore, it contributes to normal maternal tissue growth during pregnancy.
Cobalamin (Vitamin B12) can contribute to the reduction of tiredness and fatigue and to a normal homocysteine metabolism. Moreover, it contributes to a normal cell division.
In addition to the B-vitamins, the B-Komplex also contains choline and inositol, two alcohol derivatives, which have vitamin-like functions in the body. They can be synthesized in the body, as well as ingested via food. While choline is involved in various metabolic pathways of fat and homocysteine, inositol is required for the functions of cell membranes and the transmissions of signals in various nerves.
Since the B vitamins, except vitamin B12, can only be accumulated to a small extent, a sustained vitamin B intake by food or supplements is important for an adequate supply.