I agree with Straydog, please consult with your doctor if long term gastroesophageal reflux disease (GERD) can lead to precancerous conditions. And ask him/her if the usual treatment, typically proton pump inhibitors (PPIs), can reduce stomach acids causing low absorption of nutrients (e.g. B12), intestinal dysbiosis, and small intestinal bacterial overgrowth (SIBO).
AstraZeneca, the maker of both Prilosec® and Nexium®, recommends their use only for short periods of time in its package inserts.
Several studies have looked at the impact of using probiotic supplements along with PPIs. In a randomized clinical trial, children with GERD were treated with a PPI plus either a probiotic containing 100 million CFUs of L. reuteri DSM 17938 per day or a placebo. After 12 weeks, SIBO was detected in 6.2% of those who received the probiotic and 56.2% of those who received the placebo. A similar trial in adults with GERD found that a probiotic containing L. paracasei F19 prevented treatment-related bloating, flatulence, and abdominal pain.
Taking calcium and magnesium carbonates to reduce acid might help. The main ingredient in TUMS, which is OTC, is calcium carbonate.
You can always try d-limonene
, an extract from orange peels. This is purely anecdotal and yet unpublished clinical research, but it appears to help some people. D-limonene shouldn't have too many side effects but it is not recommended for pregnant or nursing women, or people who have or suspect that they have ulcers.
Life Extension sells Raft-forming alginate:https://www.lifeextension.com/vitamins-supplements/item01737/esophageal-guardian”creates a physical barrier “raft” to block reflux from occurring, protecting esophageal tissue from corrosive stomach contents. Alginate is clinically proven to reduce the frequency and intensity of reflux attacks, with effects equivalent to antacid medications that have substantial side effects.”