Instruct: Classify a given Amazon review as either positive or negative.
Query: Simply didn't work.

I've been dealing with Irritable Bowel Syndrome my entire life, ever since I can remember. My pediatrician first diagnosed me with it back when it was still called "spastic colon".IBS has pretty much ruined my life so far so I thought "why not try this?"Anyway, unfortunately, this product simply didn't work.