I have had trouble with heart burn and especially when drinking coffee! Although normally I only have one cup in the mornings, (I was trying to want to quit drinking coffee) I love coffee, I love my coffee fresh and bold!! My sweet niece knows how much I love coffee! In December of 2015 she sent me 2 Packages of X-Dark coffee beans from Kenai River Coffee Company. Because I was trying to want to quit I put the coffee beans in the freezer for a couple of weeks. Then I decided to give them a try! This coffee has a rich flavor and to my surprise NO HEARTBURN!!! For the rest of the 2 bags I had no heartburn!! After running out of the beans she had sent, I drank a cup of another type of coffee bean and the heartburn was back. I called my niece and told her my dilemma and asked how to order from Kenai River Coffee Company, I ordered 2 more bags of beans and will continue to order from them!! No more heartburn for me!! I love this coffee!!