Actually, the Nexium isn't covered by my insurance. The Prevacid I like went from a $50 to $25 co-pay this year, so I was really happy with that.
I think it is really because the doctor wants to exhause all of the PPI's before he recommends surgery. I had only tried the Nexium for one month in the past and he wanted me to try it again to see if it will help more than the Prevacid did. It has just been a very miserable transition for me though. Even on the Prevacid, when I felt good, the tests were showing I had enough acid coming up that it has been triggering my asthma.
I spoke to the doctor and his nurse twice this week. I told them I almost needed emergency treatment because my asthma was so bad. (I hadn't needed my Albuterol in over 8 weeks and I didn't have any problems before the med change.) I also told them about all of the new symptoms I have had that I hadn't experienced before. The answer both times was to stay on the Nexium regardless. I think that is what frustrated me most. The nurse told me my asthma must have been triggered by allergies. Even after I told her I have never had allergic asthma, but that I have cough varient asthma triggered by cold, pollution, chemicals and acid.
I am glad the Prevacid works so well for you. I realize now how grateful I was for how much it helped me the last couple years.