Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not work for me.

I have had to take 20 mg of Omeprazole (Prilosec) every day for years. I followed the instructions to the letter but three days after completing the regimen the reflux was back as bad as ever. I have absolutely no symptoms when I take the Omeprazole daily. My doctor recommended I try it so I thought it would be worth a try.