This info might be of use to some of us who are experiencing a dry cough. I had been experiencing a wrenching dry cough with episodes 5-6 times a day. I bought a humidifier, had the vents in my car treated for mold, washed pillows, gave up dairy, etc.. Nothing worked. Then one day I did not take my omeprazole tablet......next day no cough, next day no cough,.......two weeks later I had appointment with my rheumatologist and still no cough. I asked him if that was a coincidence, and he said that sometimes omeprazole cures a dry cough and sometimes gives you one . He said that at 4 mg I didn't need it any more. It has been 3 weeks now ...want a relief!