Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Dietary Supplements and Multiple Sclerosis: A Health Professional's Guide

Not a good review of supplements. Mostly a big-Pharma / AMA approach with warnings about how supplements might adversely affect pharmaceuticals. Prior to the big-Pharma approach to medicine, orthomolecular doctors were having as good of results as any of the pharmaceuticals can claim. This book does not make that information available to concerned people.