Food Sources of B Vitamins and Vitamin D. B vitamins are found in a wide variety of foods including protein rich foods such as fish, poultry, meat, eggs and dairy.In addition, leafy green vegetables, beans and peas contain B vitamins, while breads and cereals often have added B vitamins.ood Sources of B Vitamins and Vitamin D. B vitamins are found in a wide variety of foods including protein rich foods such as fish, poultry, meat, eggs and dairy.