I'm working in the pharma industry and I get trainings that are somewhat similar in nature.
I still don't think it would be that hard to self study. Just get the book, answer booklet and practice test CD. Read through the entire book and take a bunch of practice tests and keep putting the answers on a cheat sheet. The test is open book, so you can bring it right in with you. Also, don't be fooled about how hard the questions are on the practice test. The real test is a lot easier.
Next test is in december - Plenty of time to study!