Vit'all+ Laboratories offer the Vitamin B 50 complex containing a complex of B vitamins that participate in many physiological functions of the body. - Vitamins B1, B2, B3, B5, B6 and B9 help reduce fatigue. - Vitamins B3, B6, B8 and B12 contribute to the maintenance of normal psychological functions of vitamin B1, B8, B8 and functioning of the nervous system.