The purpose of this book is to introduce the importance of vitamins and its use in the treatment of schizophrenia, mood and movement disorders. This subject has been already known for many years. In the last years this issue has become "hot" again. To date there is new modern data based on controlled studies leading to a new attitude in consumption of these preparations. The present experience is related to higher doses in contrast to those which were used previously in addition to the scientific base data consisting of new knowledge about the mechanism of action and the influence on different dimensions. The chapters will include theoretical and scientific background as well as practical data based conclusions which might be useful for the clinician in everyday practice.