tic drugs and opioids, Doweiko/Evans' CONCEPTS OF CHEMICAL DEPENDENCY, 11th EDITION, covers the explosion of information regarding the understanding, identification and treatment of substance use disorders. Author Amelia Evans, continuing Harold Doweiko�s work on prior editions, also examines the use and misuse of tobacco, barbiturates, amphetamines, cocaine and hallucinogens, as well as substances frequently left out of other books -- such as aerosols, steroids and over-the-counter analgesics. One thing you won't find is a judgmental approach preaching that "drugs are bad for you." By studying the facts and concepts in this book, you get the information you need to understand relevant research related to misused substances and help your clients overcome substance use challenges.