This book is easy to understand for most people with a college education. Even those who have not had previous experience with the subject matter and vocabulary can catch up by reading methodically.
What I like best about this book is its balanced approach to its subject matter: drugs. Sometimes books on drugs can be very biased, but this one tells it like it is, more or less.
My copy of the ninth edition is falling apart because I have used it for reference so much. I highly recommend this book to anyone interested in busting myths about drugs.
The seller was very honest about the condition of the book and shipped promptly.