Analgesic effect: by inhibiting the synthesis of prostaglandins and other substances; anti-inflammatory effect: may be by inhibiting the synthesis of prostaglandins or other inflammatory substances; antipyretic effect: may be by acting on the hypothalamic temperature regulation center to cause peripheral vasodilation, sweating and increased heat dissipation; anti-rheumatic effect: in addition to antipyretic and analgesic, it mainly has anti-inflammatory effect; inhibitory effect on platelet aggregation: by inhibiting platelet prostaglandin cyclooxygenase, preventing the formation of thromboxane A2.

Diclofenac is a non-steroidal anti-inflammatory analgesic derived from phenylacetic acid. Its mechanism of action is to inhibit the activity of cyclooxygenase, thereby blocking the conversion of arachidonic acid into prostaglandins. At the same time, it can also promote the combination of arachidonic acid with triglycerides (triacylglycerols), reduce the concentration of free arachidonic acid in cells, and indirectly inhibit the synthesis of leukotrienes. Diclofenac is a stronger non-steroidal anti-inflammatory drug, and its inhibitory effect on prostaglandin synthesis is stronger than that of aspirin and indomethacin.

It is a non-steroidal anti-inflammatory drug with analgesic, anti-inflammatory and antipyretic effects. This product exerts its pharmacological effects by inhibiting cyclooxygenase, reducing the synthesis of prostaglandins in local tissues, inhibiting the chemotaxis of leukocytes and the release of lysosomal enzymes.

It has an inhibitory effect on a variety of Gram-positive and Gram-negative bacteria in vitro, and has a stronger inhibitory effect on hemolytic Streptococcus, Staphylococcus aureus, Vibrio cholerae, Neisseria meningitidis, Shigella, Salmonella typhi, Corynebacterium diphtheriae, etc. It also has a certain inhibitory effect on amoeba.

It mainly interferes with bacterial folate metabolism, selectively inhibits dihydrofolate reductase, and prevents nucleic acid synthesis.

Participates in bone formation and reconstruction of bone tissue after fracture, as well as muscle contraction, nerve transmission, coagulation mechanism and reduces capillary permeability, etc.