Vitamin B helps to lose weight, but taking vitamin B alone can't achieve the ideal weight loss effect. The key to losing weight is to maintain healthy eating habits and moderate exercise. Taking vitamin B 1, B2 and B6 together is helpful to promote the oxidation reaction of sugar, fat and protein in the body and maintain the normal metabolism of substances and energy in the body. In the process of losing weight, these vitamins can participate in the burning of fat and consume excess calories and fat in the body.