Do proton inhibitors all have the same basic main ingredients? I was taken off Nexium bc of Insurance purposes and now on protonix which does not work. I have to try 3 different inhibitors (have in the past) before the insurance companies agree to pay to go back on the Nexium. All of this aggrivation is because Nexium is so expensive. Over $200.00 for a 30 day supply. What ticks me off is this is the medication my gastroenterologist felt would work for me and it has but in the meantime, the insurance company decides its costing them too much and Im assuming they are cutting back. I told them that I didnt purposely pick out the most costly and if something cheaper wouod work, I would gladly take it. In the meantime, my stomach is suffering tremendously. Any suggestions are appreciated. Thanks!