Reviews the history of the generic drug industry, how they attempt to market a product that purports to be exactly the same as a better known one, what are the regulations protecting consumers, and whether or not generics actually are chemically and therapeutically identical. Small differences in binders or production methods can create two chemically similar drugs, with different effects. Greene also looks at how the explosive growth of the generic drug industry over the last few decades has impacted not only the pharmaceutical industry, but the future of the health care industry as a whole.