Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works!

My cat was running through the house screaming in pain and was in and out of the litter box every minute or so, unable to go more than a drop at a time. I had to make an emergency appointment with the vet. After the vet ran a urinalysis she said she couldn't find any bacteria and sent us home. The cat was practically climbing the walls and running from room to room, howling in pain. I couldn't catch him to give put it in his mouth because he was in such pain and was acting like he was afraid of me. I gave him these pills on some wet food every 30 minutes for a few hours and within no time he was lying on the bed peacefully. I continued with the treatment twice a day for a few weeks and eventually stopped with no recurrence of symptoms. I never told my vet. I don't think she would believe it!