If you still have stomach pain a few days after taking Tetro, you usually need to choose the appropriate relief measures according to different reasons. 1. Side effects of drugs: Usually, the symptoms of stomach pain after taking Quadruple can be seen in the side effects of the drugs taken, such as metronidazole, clarithromycin and so on, which can cause gastrointestinal discomfort, leading to the persistence of abdominal pain symptoms. You can take appropriate drugs to protect the gastric mucosa, such as aluminum thioglycollate. If necessary, you can replace other drugs under the guidance of the doctor, such as amoxicillin, gentamicin and so on. 2. The course of treatment has not been achieved: after eating a few days after the quadruple still appear to have symptoms of stomach pain, may be due to the use of medication for a short period of time, the symptoms are not effectively controlled, should continue to use the quadruple sterilization therapy standardized treatment. Specific treatment should be carried out under the guidance of the doctor, and need regular follow-up, if there are problems, adjust the treatment program at any time.