B vitamins play a key role in the proper functioning of the body. They support the nervous system, are involved in the production of red blood cells and in the processes of energy production. Regular supplementation of B vitamins can be especially helpful during periods of chronic fatigue, weakening of the body or increased stress. The most important ingredients include: vitamin B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (folic acid) and B12 (cobalamin). Pharmacies offer both medicines and dietary supplements with B vitamins, tailored to different health needs.