Yamamoto Research Vitamin B-Complex is a dietary supplement containing vitamins and other nutritional factors, whose formula has been designed to supply B vitamins (B1, B2, B6 and B12), niacin, folic acid, biotin and pantothenic acid in cases of increased need. Vitamins B1, B12, niacin and biotin contribute to the normal functioning of the nervous system and to normal psychological function, whereas folic acid and vitamin B12 contribute to the normal function of the immune system and to the reduction of tiredness and fatigue. In addition, niacin, biotin and vitamin B2 help to maintain mucous membranes and normal skin. Finally, pantothenic acid contributes to regular mental performance. Garcinia Cambogia is a small exotic fruit that can only be grown in certain countries such as India and Pakistan; its beneficial properties come from the active ingredient contained in its peel: HYDROXYCITRIC acid. Hydroxycitric acid inhibits the action of the enzyme citrate synthase, which is responsible for the transformation of excess sugars into fat.