Etoricoxib, whose full name is Etoricoxib Tablets, can have side effects such as dyspepsia, pharyngitis, nausea, upper gastrointestinal bleeding, vomiting, hyperkalemia, asthma, diabetes mellitus, somnolence, tinnitus, bloating, constipation, malaise, urticaria, facial edema, angina pectoris, arrhythmia, dyspnea, angioedema, hepatitis, and renal insufficiency. Etoricoxib belongs to non-steroidal anti-inflammatory drugs, which can inhibit the production of prostaglandins and reduce the symptoms of pain and fever caused by prostaglandins. It can be used for acute gouty arthritis, acute and chronic stages of osteoarthritis, and primary dysmenorrhea. The drug increases cardiovascular risk and grows with the elevation of the dose of the drug and the duration of its use, so it should be taken for as little time as possible and in as small a dose as possible. In addition, the drug interacts with rifampicin, warfarin, methotrexate and other drugs, so the use of the drug should be consulted with a specialized doctor or pharmacist. It is contraindicated in the following cases: allergy to the drug; asthma, urticaria, etc. after taking other non-steroidal anti-inflammatory drugs; active gastrointestinal bleeding, ulcers, or a history of recurrent bleeding and ulcers; congestive heart failure of NYHA classification II-IV; cerebrovascular disease, including recent angioplasty and other surgical procedures; peripheral arterial disease; ischemic heart disease. Pregnant women in late stages of pregnancy should avoid using the drug, and nursing women should suspend breastfeeding if they need to use the drug. If you need to use the drug patients, please be sure to strictly follow the instructions of the doctor or pharmacist under the guidance of the medication, do not self-medication.