Sisu Vitamin B6 - Vitamin B6 has proven useful in the treatment of high blood pressure, hyperactivity and PMS, and maintaining optimal levels of Vitamin B6 in the body has shown to be effective in reducing the risk of cardiovascular disease. It has also shown to be beneficial to brain functions, immune system support and skin problems. B6 plays an important role in the body's ability to absorb Vitamin B12 and in the production of hydrochloric acid and magnesium, as well as in the breakdown and utilization of carbohydrates, fats and proteins.