The acid gets mixed up with other stomach secretions so it levels out at around pH 1–3, says The Institute Of Human Anatomy. Thankfully, all that mucus we mentioned acts as a physical barrier ...

Acid reflux, also known as gastroesophageal reflux (GER), happens when stomach acid flows back into ... Expression of serotonin receptors in human lower esophageal sphincter.

Heartburn and acid reflux effect millions of Americans. Medications for treating acid reflux seek to neutralize stomach acid or prevent the production of it. While they are generally well tolerated, ...

Heartburn is a symptom of acid reflux, or when acid from your stomach bubbles up into your esophagus. Causes of acid reflux include certain foods and drinks, medications, and obesity. You may have ...