'This is the most authoritative and comprehensive exposition of lithium to date. Lithium is the only medication in psychiatric practice that could be reasonably considered as disease-modifying, and so is worthy of a dedicated exposition of its chemistry, physiological impact, clinical efficacy and safety. Drs Meyer and Stahl deftly explain putative mechanisms of lithium action with both accessibility and nuance. This is a must have for any practitioner prescribing in the mental health space.' Manpreet Kaur Singh, M.D., M.S., Associate Professor of Psychiatry and Behavioral Sciences, Stanford University, Stanford