I haven't had heartburn or acid reflux like this for over two years. Why I have it now is anyone's guess and I really should have gone to the all-night Rite-Aid to get Pepcid, which is what I just did, although I got their Rite-Aid brand - same ingredients, 7.50 cheaper. I've taken two so far and will try for at least a few hours of sleep. Not good. Plus a terrible allergy attack at five made it twice as bad that that's just starting to subside.