NBfit is a nutraceutical that consists of eight B vitamins, so as to provide the body with all the B vitamins it needs. Getting the recommended amounts of vitamins each day is an important part of the nutrition equation, and B vitamins are essential for preventive care. More specifically, B vitamins are a group of nutrients that play many important roles in your body and factors like age, pregnancy, dietary choices, medical conditions, medication and alcohol use increase the body’s demand for B vitamins.