’ve always thought it sounded counterintuitive to use an acid to alleviate indigestion, but the number of times I’ve heard people treat their symptoms of heartburn with apple cider vinegar is too large to count. So, I decided to look into whether this strategy works, and to do some investigation about the idea behind its use. To my surprise, there is no research published in medical journals that addresses using raw apple cider vinegar to treat heartburn, despite widespread use and recommendations from blogs and websites.
https://www.health.harvard.edu/blog/apple-cider-vinegar-for-heartburn-2018032813530
Apple cider vinegar… for heartburn?