Vitamin B6 is a water-soluble type of B vitamin. It can be found in certain foods such as cereals, beans, vegetables, liver, meat, and eggs. It is also used for heart disease, premenstrual syndrome (PMS), depression, and many other conditions. It is required for the proper function of sugars, fats, and proteins in the body. It is also required for the proper growth and development of the brain, nerves, skin, and many other parts of the body.