This product is a selective 5-hydroxytryptamine 3 (5-HT3) receptor antagonist. Its mechanism of action may be to antagonize the 5-HT3 receptors in the peripheral vagus nerve endings and central chemoreceptor areas, thereby blocking the vomiting reflex caused by factors such as chemotherapy and surgery that promote the release of 5-hydroxytryptamine from intestinal chromaffin cells and excite the vagus afferent nerves. This product has high selectivity and no side effects such as extrapyramidal reactions and excessive sedation.

This product is a selective 5-hydroxytryptamine 3 (5-HT3) receptor antagonist. Its mechanism of action may be to antagonize the 5-HT3 receptors in the peripheral vagus nerve endings and central chemoreceptor areas, thereby blocking the vomiting reflex caused by factors such as chemotherapy and surgery that promote the release of 5-hydroxytryptamine from intestinal chromaffin cells and excite the vagus afferent nerves. This product has high selectivity and no side effects such as extrapyramidal reactions and excessive sedation.

Cephalexin is a first-generation cephalosporin, which is sensitive to most strains of Streptococcus pneumoniae, hemolytic Streptococcus, and Staphylococcus aureus that produces or does not produce penicillinase, has good antibacterial effect on Neisseria, and has certain antibacterial effect on some Escherichia coli, Proteus mirabilis, Salmonella and Shigella. Enterococci, methicillin-resistant Staphylococcus aureus, Haemophilus influenzae, other Enterobacteriaceae, Acinetobacter, Pseudomonas aeruginosa, Bacteroides fragilis are resistant to it, Fusobacterium and Veillonella are generally sensitive to it, and anaerobic Gram-positive cocci are moderately sensitive to it.