When you have a sensitive bladder, gut or stomach, the quality of the water you drink... as well as any extra flavorings, preservatives and/or added acids can be a problem. You'll need to look for the purest waters and water drinks that you can find. The HINT waters below meet our needs well. They have no added acids and a hint of a light, refreshing flavor that will give you something enjoyable to drink, especially during the hot days of summer and fall. Enjoy! - Jill