Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Be Careful

I thought about using the product, but after researching about one ingredient (cascara sagrada), I decided not to try it. I'd suggest you read up on it since long term use can cause dependence and be harmful to your body. It can also reduce the effectiveness of oral medications. I just googled the ingredient name with "fact sheet" to find information. Supplements aren't regulated by the FDA and we've all seen what can happen even with FDA approved medications.