Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't Work for Me Personally

After my first UTI (following intimacy), which had to be treated with antibiotics, I researched and ended up trying the D-Mannose. I was diligent about its use and everything else one should do to prevent the infection, but it did not prevent a subsequent infection. I am not saying it doesn't work for some people.....just did not work for me. Everyone's body is different and reacts differently.