Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Had no effect on my kidney stones

I had two small kidney stones in the lower part of my left kidney that showed up on a CT scan. I had high hopes that spending the money for Uriflow would do what was advertised and dissolve those two stones. So I spent the money and ordered a bottle of Uriflow capsules and took them according to the instrutions on the bottle. I just recently returned from the Mayo Clinic where I under went a CT scan. The results showed I still had two small kidney stones in the lower part of my left kidney. Final result is my wallet is lighter and my kidney stones still present!