1. Oral gastric motility drugs: These drugs can inhibit bile reflux into the stomach. Commonly used drugs include: ① Motilium (also known as Domperidone). This drug can enhance gastrointestinal peristalsis, regulate normal gastrointestinal activity, allowing food to smoothly enter the small intestine from the stomach while inhibiting bile reflux. It is usually taken 15-30 minutes before meals. ② Prebo...