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 ...

When Earlie Smith, then 39, woke on October 15, 2023, she felt intense heartburn. She ate something and took an over-the-counter heartburn medication, but the sensation never dissipated.