The B complex is key to the bodys vital metabolism, while helping to maintain a healthy nervous and digestive system. It is also important for hormone balance and a strong immune system, while improving mental performance. Health Aids slow-release formula provides the body with a steady, well-balanced dose of B complex vitamins (B1, B2, B6, B3&B5, B12) throughout the day, along with the right combination of nutrients. Suitable for people with sensitive stomachs.