This product is a synthetic antibacterial anti-tuberculosis drug that can penetrate into mycobacteria to interfere with RNA synthesis, thereby inhibiting bacterial reproduction. It is only effective against mycobacteria in the growth and reproduction period. So far, no cross-resistance has been found between this product and other anti-tuberculosis drugs.

The antibacterial spectrum is the same as that of lincomycin, and the antibacterial activity is 4 to 8 times stronger than that of lincomycin. It has high antibacterial activity against aerobic Gram-positive cocci, such as Staphylococcus (including penicillin-resistant and methicillin-sensitive strains), hemolytic streptococci, grass-green streptococci, and Streptococcus pneumoniae. It also has good antibacterial effects on anaerobic bacteria. Most of the genera, such as Bacteroides, Fusobacterium, Actinomyces, Peptococci, and Peptostreptococci are sensitive to this product. It acts on the 50S subunit of the ribosome of sensitive bacteria, preventing the extension of the peptide chain, thereby inhibiting the protein synthesis of bacterial cells. It is generally an antibacterial agent, but at high concentrations, it also has a bactericidal effect on certain bacteria.

It has a strong antibacterial effect on most anaerobic bacteria. Its bactericidal mechanism has not been fully elucidated. The nitroreductase of anaerobic bacteria plays an important role in the energy metabolism of sensitive strains. The nitro group of this product is reduced to a cytotoxin, thereby acting on the DNA metabolism process of bacteria and promoting cell death. Resistant bacteria often lack nitroreductase and are therefore resistant to metronidazole.

It is a long-acting nonsteroidal anti-inflammatory analgesic. After entering the body, it is metabolized into diphenyl ethyl ester, which can inhibit the activity of cyclooxygenase, reduce the synthesis of prostaglandins, and produce anti-inflammatory, analgesic and antipyretic effects.

This product is a piperazine calcium channel antagonist that can block calcium influx into vascular smooth muscle, causing vasodilation and improving cerebral and coronary circulation, especially having a certain selective effect on cerebral blood vessels. This product can inhibit phosphodiesterase, prevent cAMP from decomposing into inactive 5-AMP, thereby increasing the intracellular cAMP concentration, inhibiting the release of histamine, 5-hydroxytryptamine, bradykinin and other biologically active substances, and also inhibiting the activation of complement C4.

This product is a brain metabolism improving drug, a derivative of vitamin B6, which can promote glucose and amino acid metabolism in the brain, improve systemic assimilation, increase carotid blood flow, and enhance brain function. It also has a certain effect on the limbic system and reticular structure.