Instruct: Classify Amazon reviews into positive or negative sentiment
Query: why recommend a brand name? (edited)

I have not read this book - my comment is concerning one of the other reviews that states he recommends 'Cortislim.' Why does the Dr. recommend "Cortislim", a brand name product that contains the active ingredient and coritsol blocker 'phosphatidylserine'? Phosphatidylserine can be purchased at a health food store for 1/3 the cost of Cortislim, Propolene, Relacore or any other of those cortisol blocking weight loss products. Just wondering.... (edited 11/14/06 due to another reviewer's comment, I will amend my review to include to say - Cortislim may not be recommened in the book, it didn't have to - Dr. Talbott developed Cortislim!)