Cinnamon tea may not be the best choice for individuals prone to acid reflux. Cinnamon, while aromatic and flavorful, can relax the lower esophageal sphincter (LES), potentially allowing stomach acid to flow back into the esophagus. This may exacerbate symptoms of acid reflux or heartburn. If you have acid reflux, it's advisable to consult with a healthcare professional before adding cinnamon tea to your diet.