I think this book is important in that it shows how animal experiments do not benefit human beings, except for a few, financially. The authors provide a brief history of how vivisection came to be the norm in testing medication, and then follow up with why it's wrong, from "white coat welfare" to chapters on cancer and AIDS and the inefficacy of animal testing to find cures for these (and other) diseases.
So this book is needed. From an interest standpoint, I find it uneven. I mean, I was obscenely interested in the birth defects and other problems that come from drugs, particularly in the 1960s and 1970s, that were found safe on animals and that caused tremendous harm to human animals. But parts of it made my eyes cross, particularly where the authors talk about how specific genes work and how medicines work on those genes.
Again, good for those who like and understand science and medicine, and probably well worth the read for anyone interested in understanding the persuasive counterarguments to vivisection. But not the most fascinating thing I've ever read.