Synergistic effect of several vitamins: proper energy metabolism (B1,B2,B3,B4,B5,B6,B7,B12), proper functioning of the nervous system (B1,B2,B3,B6,B7,B8,B12), normal psychological functions (B1,B3,B6,B7,B9,B12), abolition feeling of fatigue and weariness (B2,B3,B5,B6,B7,B8,B9), healthy hair and skin and maintaining the proper condition of the mucous membrane (B2,B3,B7), normal condition of red blood cells (B2,B6,B9,B12), normal homocysteine ​​metabolism and functioning of the immune system (B2,B4,B6,B9,B12).