Let us try and understand the causes of hyperacidity and GERD.
Food travels down the esophagus into the stomach. There is a valve between these two organs. It prevents the regurgitation of food from the stomach upwards into the esophagus. With age, the valve elasticity reduces, and it is not very effective in stopping the regurgitation from the stomach upwards.
HCL is naturally released to initiate the digestive process in the stomach. When it regurgitates upwards, you feel the heartburn.
There are multiple medications available to suppress acid production in the stomach. Suppression leads to low production of acids or total suppression of acid in the stomach. The gut and intestinal microbiota are essential for digestion composition changes due to suppression by these drugs.
There are multiple therapies available in science to normalize the process described above. You should consult a gastroenterologist for advice.
Herbs, too, contain chemicals that act in various ways to alter the acid production process. Don’t forget that most modern drugs in use originated in plants. It is only subsequently that manufacturers moved from plant-based ingredients to chemicals.
Ayurveda prescribes several herbs to do what modern medicine drugs. The names are exotic, and they are peddled as safe medications with no side effects. It cannot be further from the truth. Ayurveda is an observation-based ancient science. Its concepts, herbs, and formulations require to be tested and proven to be effective and safe. Until that is achieved, patients should abjure these formulations.
I have studied herbs for several years. Most herbal medication being peddled in Ayurveda and Traditional Chinese Medicine has not been validated in scientific trials. Consume these at your risk.