Show me your first aid kit and I will show you who you are! Some rely on synthetic products, others are devoted to natural principles, there are the fanatics of homeopathy and those who say they take nothing. Who does not have at home some kind of 'first-aid kit of medicines and remedies', however rudimentary it may be. But where do the molecules come from, those ordered assemblies of atoms that constitute the smallest portion of a substance, which become drugs? How long does it take for an active principle to be approved? What steps must it follow and why is it necessary to experiment on animals and human beings? These are some of the questions that Valeria Beruto asks in order to explore the fascinating world of clinical pharmacology and discover unsuspected stories of drugs. A practical book that will captivate any reader, written with wit and a good dose of humor, in which Dr. Beruto also relates examples, milestones and anecdotes of the most relevant scientific studies from the dawn of pharmacology to the present day.