Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Guaifenesin protocol debunked years ago

Guaifenesin doesn't work - it never did. The theoretical basis for the treatment is based on a false premise - that FMS is an "auto-immune" disease, and you need to detox. Well, guess what. It's not, and never was.FMS is a neurological disease and Guaifenesin is just another placebo.I know hundreds of people with FMS, and I don't know anyone "cured" or even helped by this protocol - not that many can actually follow it.