B vitamins are the main responsible for maintaining the emotional and mental health of the human being. They may also be helpful in cases of depression and anxiety. They help maintain the health of nerves, skin, eyes, hair, liver and mouth, as well as the muscle tone of the gastrointestinal tract. It facilitates the digestion and absorption of carbohydrates, proteins and fat. In the stomach, the B vitamins will stimulate the release and will control the action of the gastric juice, helping in the absorption and digestion of the nutrients and, in this way, will increase the effectiveness of your diet. If you are a sportsman or fitness practitioner who wants to get the most benefits out of your diet, B-complex supplementation is indicated. I recommend this supplement for its quality and effectiveness.