Off-label prescribing of Ketamine is legal and common. Prescribing Ketamine is often times done in the absence of adequate supporting data. This book provides supporting data and a sense of understanding for prescribing Ketamine in your practice. This book is an overview of current research. Dosages are provided based on the research papers. The review highlights the recent clinical research that supports the therapeutic utility of ketamine as a multifaceted drug. After long-term use as a dissociative anesthetic, it has re-emerged as a valuable agent for alleviating pain, asthmatics, and depression.