Instruct: Classify the given review as either positive or negative.
Query: Total nonsence and marketing ploy

Assertions made by Dr. Mercola are not supported by any existing scientific evidence and serve no other purpose but to direct readers to his website in order to spend money on useless tests and products. Dr. Mercola was repeatedly warned by FDA to stop making unsubstantiated claims about his products. If you want to be healthy read some sound nutritional advice on Mayo clinic website. It is free!