When my acid first hit full-force, I thought I was having a heart attack. Some serious burning and pain going on. Nexium helped a lot. But, I was surprised how addicted to coffee I was. I was able to cut all the foods/spices that the MD suggested I remove from my diet. But, after a few months, I was cheating with the coffee. What I found to be helpful was Trader Joe's Low Acid French Roast. Cut in the morning, cup in the early afternoon was fine. Couldn't do any more than that without feeling pain. The low acid coffee isn't quite as good as regular coffee, but it's good enough. I don't think low acid and decaf are synonomous.