1, bismuth potassium citrate 240mg each time, four times a day, half an hour before meals, and the fourth time before going to bed.

2, amoxicillin 750mg each time, three times a day, half an hour after meals.

3, metronidazole 400mg each time, three times a day, half an hour after meals.

4. Omeprazole 20 mg, taken once before going to bed at night.