Puroast sounds like a generic brand, but the truth is anything but. Their French Roast is bold but easy on the gut.
According to the folks at Puroast, their methods of roasting greatly reduces the acid in the coffee by more than 70% compared to leading brands.
To reduce the acidity to that degree while not sacrificing much flavor is a feat indeed. Keurig K-cups are available, as well as a House Blend and Dark French Roast coffee offering.