Suture after wisdom teeth extraction, you can take metronidazole to prevent infection, and if pain occurs, you can take painkillers for analgesia, such as ibuprofen, as follows. If the wound is large after wisdom tooth extraction, suture is needed. There are many bacteria and food residues in the mouth, which may lead to infection and affect the normal healing of the wound. Metronidazole belongs to nitroimidazole antibacterial drugs, can kill anaerobic bacteria, and has a preventive effect on infection. If there is pain in the wound, you can take painkillers, such as diclofenac sodium, ibuprofen and so on, to reduce the pain. All of the above drugs should be used under the guidance of a doctor, if infection, pain and other symptoms, it is recommended to go to the hospital in a timely manner, early targeted treatment.