4. Red Diamond Unsweet Tea
pH level: 6.01
We are continuing our list of least acidic drinks for stomach ulcer patients with another product from the diverse product line of Red Diamond. This time it is unsweet tea, so basically if you are looking to cut down on calories, this product is for you. Being sugar high is not an ideal condition for anyone, with or without a stomach ulcer. If you are concerned with your calorie intake, then give this product a try, and you just might find your new favorite tea brand.