The State Drug takes the reader on a journey into the fascinating world of the most famous drug in Renaissance Europe: the panacea and poison antidote known as theriac. With meticulous research and elegant storytelling, Di Gennaro Splendore showcases theriac as a multifaceted medicament that prompted scientific inquiries, inspired public festivals, provoked professional rivalries, and became a key part of Italian public health. Full of entertaining anecdotes and thoughtful analysis, this book presents an important new view of early modern pharmacy.