Calcium citrate has been studied for its potential effects on the lower esophageal sphincter (LES). Research suggests that calcium citrate may help in improving the function of the lower esophageal sphincter, which is crucial for preventing acid reflux. By enhancing the strength of the lower esophageal sphincter, calcium citrate could play a significant role in reducing the frequency and severity of reflux symptoms. Therefore, incorporating calcium citrate into one’s diet might be beneficial for individuals dealing with issues related to the lower esophageal sphincter.