I drink a glass of water with about a tablespoon of unpasteurized apple cider vinegar in it at lunchtime each day. As we age, the stomach makes LESS acid. Acid is the chemical signal for the sphincter between the esophagus and stomach to close. So, for many, heartburn is not due to too much acid, but acid in the wrong place. Those drugs you've been taking block your acid producing cells, so the body just makes more of those cells. Without the drugs, you can have extra cells now producing acid. I am not sure if drinking ACV in water will help your situation, but it is worth trying.