This product is a broad-spectrum protease inhibitor and has inhibitory effects on plasmin and other enzymes.

Azithromycin is a 15-membered macrolide antibiotic. In vitro tests have shown that azithromycin has antibacterial effects on a variety of common clinical pathogens, including: Gram-positive aerobic bacteria, Staphylococcus aureus, Streptococcus pyogenes (group A beta; hemolytic streptococci), pneumonia (streptococci), a-hemolytic streptococci (grass-green streptococci) and other streptococci, diphtheria (rod-shaped) bacilli. This product shows cross-resistance to erythromycin-resistant Gram-positive bacteria, including fecal streptococci (enterococci) and various methicillin-resistant Staphylococcus strains.

It has a strong antipyretic effect on rabbits with fever caused by bacterial endotoxins, and the effect is rapid and can last for more than 4 hours; it can counteract the increased permeability of capillary walls caused by xylene or histamine, and has a significant antagonistic effect on adrenaline-induced acute pulmonary edema; it can shorten the sleep latency period of mice caused by sodium pentobarbital, prolong their sleep time, and enhance the effect of subthreshold sodium pentobarbital, causing mice to sleep, indicating a significant sedative effect; it can significantly promote the adrenal cortex function of rats and increase the body's emergency response to pathogen infection; it has an inactivating effect on influenza virus type AⅠ, type AⅢ, pneumonia adenovirus (Adv) type III, type IV, enterosyncytial virus and respiratory syncytial virus (RSV).