Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Brace yourselves

"Gentle" is not a word I would associate with this product. I have never had a bad reaction to herbs, dieting, supplements, or even any type of medication before I tried this product. I followed the instructions closely, and three days after starting this programme I could not stand the nausea, fatigue, or intestinal cramping any longer. I stopped using the product, and it took 3 additional days to recover.