The effects of Lysine for Injection include antipyretic, analgesic and anti-inflammatory. It is commonly used in the treatment of fever and pain caused by a variety of diseases, especially the treatment of mild and moderate pain is more effective. Lysine for injection is a common clinical non-steroidal anti-inflammatory analgesic, mainly composed of aspirin, lysine complex salt and so on. Its mechanism of action is through the inhibition of cyclooxygenase, reduce prostaglandin synthesis, etc., to reduce the body fever, pain, but also on the local inflammation has a better therapeutic effect. Lysergic acid for injection should be avoided in combination with other NSAIDs, including selective COX-2 inhibitors. Adverse effects can be minimized by using the lowest effective dose for the shortest therapeutic time as needed to control symptoms. Adverse reactions such as stomach upset, nausea, vomiting, bleeding tendencies, and hepatic and renal impairment may occur with the use of Lysine for Injection. It is contraindicated in patients with known hypersensitivity to the product, in patients with asthma, urticaria or anaphylactic reactions induced by the administration of aspirin or other NSAIDs, and in patients with a history of gastrointestinal hemorrhage or perforation following the application of NSAIDs. Drug use should be under medical supervision.