Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not work at all

I purchased a 16 oz. bottle for a tooth abscess based on all the glowing reviews on Amazon. I tried it for a week at double the recommended dose. It didn't do a thing. I might as well have been drinking plain water. $30 bucks down the drain (literally!). Do not be fooled by all the great reviews at the beginning of each item. I think these are stacked by the manufacturers.