The medical world is probably one of the difficult fields in the health sector to understand. Can a definite line between the bad drugs and good drugs be drawn? That depends on the individual asked, but the answers are of course different depending on the designation of the person asked. Many drugs are used but little is known about them. Heroin was once the most used drug due to its power of dealing with pain. Once the drug showed another side of it, it was quickly withdrawn from the market and it is now used under strict measures in the medical field. This book will help you understand and answer many questions that you may have.