It has antipyretic and analgesic effects, can inhibit the synthesis and release of hypothalamic prostaglandins, restore the normal responsiveness of the receptor neurons in the body temperature regulation center and play an antipyretic and analgesic effect; it also has analgesic, anti-inflammatory and anti-rheumatic effects by inhibiting the synthesis of peripheral prostaglandins, and has the effect of inhibiting platelet aggregation.

It has antipyretic and analgesic effects, can inhibit the synthesis and release of prostaglandins in the hypothalamus, restore the normal responsiveness of the receptor neurons in the body temperature regulation center, and thus have an antipyretic and analgesic effect.

It is a central nervous system stimulant that can excite the cerebral cortex, increase sensitivity to the outside world, constrict cerebral blood vessels, and enhance the effect of the first two drugs in relieving headaches.

It forms a protective layer in the intestine to prevent the invasion of pathogens and viruses; stimulates the intestine to secrete antibodies and improves intestinal immunity; selectively kills intestinal pathogens, protects and promotes the growth of beneficial bacteria; regulates the electrolyte and water balance of the intestinal mucosa; promotes the secretion of gastric juice and enhances digestive function.

It competes with p-aminobenzoic acid for dihydrofolate synthase, hindering the bacterial synthesis of dihydrofolate. When used in combination with trimethoprim, it can double block the bacterial tetrahydrofolate synthesis process.

It competes with p-aminobenzoic acid for dihydrofolate synthase, hindering the bacterial synthesis of dihydrofolate. When used in combination with trimethoprim, it can double block the bacterial tetrahydrofolate synthesis process.

By inhibiting the bacterial dihydrofolate reductase, it hinders the reduction of dihydrofolate to tetrahydrofolate. When used in combination with sulfonamides, it can double block the bacterial tetrahydrofolate synthesis process.

Rifampicin is a semi-synthetic broad-spectrum antibacterial drug of the rifamycin class, which has antibacterial activity against a variety of pathogenic microorganisms. The drug has a significant bactericidal effect on Mycobacterium tuberculosis and some non-tuberculous mycobacteria (including Mycobacterium leprae, etc.) both inside and outside the host cells. It has a good antibacterial effect on aerobic Gram-positive bacteria, including enzyme-producing strains of Staphylococcus aureus and methicillin-resistant strains, Streptococcus pneumoniae, other Streptococcus, Enterococcus, Listeria, Bacillus anthracis, Clostridium perfringens, Corynebacterium diphtheriae, anaerobic cocci, etc. It also has a high degree of antibacterial activity against aerobic Gram-negative bacteria such as Neisseria meningitidis, Haemophilus influenzae, and Neisseria gonorrhoeae. Rifampicin also has a good effect on Legionella, and has an inhibitory effect on pathogens such as Chlamydia trachomatis, lymphogranuloma venereum, and psittacosis.

Quinolone antibiotics interfere with bacterial DNA synthesis by acting on bacterial DNA gyrase, thus causing bacterial death. They have antibacterial effects on Gram-negative bacteria such as Escherichia coli, Klebsiella pneumoniae, Enterobacter aerogenes, Proteus mirabilis, Serratia, Salmonella typhi, Shigella, Pseudomonas aeruginosa, etc.