Fennel
Fennel has substantial digestive health advantages that make it worth mentioning on its own. For many years, conventional medical practices have used fennel to treat digestive issues.
It is low in acid and has a mild licorice flavor, which might help calm an upset stomach that can be a cause or symptom of GERD. You can either directly chew a few fennel seeds or soak them in a little water and then drink up water for relief from acidity and heartburn. Or you may slice it raw and add it to a salad, sauté it as a side dish, or roast it to serve as the main entrée. Fennel seeds might provide instant relief from reflux for some people. Fennel seeds can be eaten or steeped in hot water to make tea.