This new edition follows the aim of helping the readers to develop a rational approach towards the drugs used in anaesthesiology practice., New chapters have been added as spectrum of perioperative management is becoming vast and in multi-disciplinary team management, anaesthesiologists will have to play an important role. Selection of drugs and dose in emergency situations is a crucial concept which requires clarity in approach., The book will hopefully guide the readers in choosing the drug in an objective manner to optimize the risk benefit ratio of the drug.