I recently wrote the Canadian version of the pharmacy licencing exam - the PEBC's. I did find this book very helpful for studying because each section was laid out well and very clearly explains the important features of each disease and drug therapy. Unfortunately, it did not cover all the important topics. For example, cholesterol and lipids, GERD, and alcoholic liver disease weren't covered. But the topics that are covered are done very well and it makes a great addition to therapeutics notes.
A caution for Canadians - I would recommend this book but beware of the fact that not all of the listed drugs are available here (nor are all our drugs listed in it) and that the questions in the samples and practice exams are not very representative. They are a great studying tool to see how much information you got from each section, just don't expect your exam to resemble them much.