It has anti-inflammatory, antipyretic and analgesic effects. Its mechanism of action is to reduce the synthesis of prostaglandins by inhibiting cyclooxygenase. It stops the formation of pain nerve impulses in inflammatory tissues and inhibits inflammatory reactions, including inhibiting the chemotaxis of leukocytes and the release of lysosomal enzymes. As for the antipyretic effect, it acts on the hypothalamic temperature regulation center, causing peripheral vasodilation and sweating, which increases heat dissipation. This central antipyretic effect may also be related to the inhibition of prostaglandin synthesis in the hypothalamus.

This product belongs to the macrolide antibiotics, which is the dodecyl sulfate of erythromycin propionate. It has antibacterial activity against Staphylococcus, various groups of streptococci and Gram-positive bacilli. Neisseria, Haemophilus influenzae, Bordetella pertussis, etc. may also be sensitive to this product. This product also has antibacterial activity against various anaerobic bacteria except Bacteroides fragilis and Fusobacterium; it also has inhibitory effects on Legionella, Campylobacter fetus, some spirochetes, Mycoplasma pneumoniae, Rickettsia and Chlamydia. This product is an antibacterial agent, but it also has a bactericidal effect on some bacteria at high concentrations. This product can pass through the bacterial cell membrane and reversibly bind to the 50S subunit of the bacterial ribosome near the donor site (P site), blocking the transfer RNA (t-RNA) binding to the P site, and also blocking the displacement of the polypeptide chain from the acceptor site (A site) to the P site, thereby inhibiting bacterial protein synthesis. This product is only effective against bacteria with active division.

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. Rifampicin 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.

As a histamine H1 receptor antagonist, this product can counteract the capillary dilation caused by allergic reactions, reduce the permeability of capillaries, and relieve wheezing caused by bronchial smooth muscle contraction. This product has a long-lasting antihistamine effect and also has a significant central inhibitory effect, which can increase the effects of anesthetics, analgesics, hypnotics and local anesthetics. This product is mainly metabolized in the liver.

This product is a dried yeast body, rich in B vitamins, and has an auxiliary therapeutic effect on indigestion.