Do you add whole milk to coffee? The casein and fat should help to reduce acidity and make it easier on the stomach. If you can't do that, I've heard of people

Do you add whole milk to coffee? The casein and fat should help to reduce acidity and make it easier on the stomach. If you can't do that, I've heard of people adding a sprinkle of baking soda as a buffer to black coffee. I'm not sure how much you'd need, probably just a tiny amount that you'd barely be able to taste.