The book focuses on the molecular mechanisms underlying the pharmacological properties of flavonoids. Flavonoids are the phenolic compounds present in many fruits and vegetables, and they are most commonly consumed by humans through diet. All the different classes of flavonoids like the flavanones, flavones, anthocyanins and catechins have been observed to exhibit a variety of pharmacological actions. Though the flavonoids are known to interact with many of the cellular targets, only recently there has been a great interest among the scientist to delineate the molecular mechanism of action of flavonoids. Since understanding the molecular mechanism is very much important for predicting the clinical feasibility of a drug, this edited volume has been designed to collect and compile the information’s available on the molecular mechanisms of flavonoids as review article. The book comprises of 14 chapters and each chapter summarizes on the progress made in the flavonoid research, for the treatment of various disorders like cancer, diabetes, infectious diseases and so on. The available literatures on the molecular mechanism of the flavonoids are discussed in all the chapters, which will promote the researchers for further investigation on the pharmacological applications of flavonoids.