Acetaminophen is mainly used for the treatment of fever caused by influenza or common cold, as well as the relief of mild and moderate pain, and is generally not used for the treatment of mouth ulcers. Acetaminophen is a compound preparation, the components include acetaminophen, aspirin, caffeine, the first two can inhibit the synthesis of prostaglandins, play the role of antipyretic and analgesic, caffeine can enhance the efficacy of the first two drugs, the drug is mainly used for the treatment of fever caused by colds and flu, as well as the relief of headache, arthralgia, menstrual cramps, toothache and other mild to moderate pain. At present, there is no research to show that the drug has a therapeutic effect on oral ulcers, so you can not use a curacaoxin to treat oral ulcers, at present, commonly used in clinical treatment of oral ulcers, ice boron powder, oral ulcers powder, nourishing the yin and muscle mass, etc., the patient should comply with the doctor’s instructions to use the drug. It should be noted that, allergic to this drug, pregnant women, lactating women, active bleeding disorder patients, hemophilia or thrombocytopenia patients, severe hepatic and renal insufficiency, nasal polyp syndrome patients, wheezing people prohibit the use of aqiaol san, some patients may be nausea, vomiting, epigastric discomfort, allergies and other adverse reactions during the use of the drug, if the symptoms are serious, should consult a doctor in a timely manner. Patients with oral ulcers should follow the doctor’s instructions to use medication to avoid blindly using aqaifen, so as not to induce side effects, or affect the condition.