It has good antitussive and expectorant effects on chronic bronchitis

It has a strong histamine H1 receptor blocking effect, can alleviate other respiratory symptoms caused by allergies, and also has a mild inhibitory effect on the central nervous system

It can inhibit the synthesis of prostaglandins and has antipyretic and analgesic effects

It is an antihistamine that can relieve runny nose, nasal congestion, and sneezing symptoms.

It has antipyretic and sedative effects

It has a broad-spectrum antimicrobial effect in vitro, including aerobic Gram-negative and Gram-positive bacteria, anaerobes, Rickettsia, spirochetes and Chlamydia. It has a bactericidal effect on Haemophilus influenzae, Streptococcus pneumoniae and Neisseria meningitidis; it only has an antibacterial effect on anaerobic bacteria such as Staphylococcus aureus, Streptococcus pyogenes, Streptococcus viridans, Group B hemolytic Streptococcus, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Salmonella typhi, Salmonella paratyphi, Shigella, Bacteroides fragilis, etc. Pseudomonas aeruginosa, Acinetobacter, Enterobacter, Serratia marcescens, indole-positive Proteus, methicillin-resistant Staphylococcus and Enterococcus are usually resistant to chloramphenicol. Chloramphenicol is fat-soluble and enters bacterial cells by diffusion, reversibly binds to the 50S subunit of bacterial ribosomes, inhibits the formation of peptide chains, and thus prevents protein synthesis.

It can significantly inhibit the basal gastric acid secretion during the day and night, and can also inhibit the gastric acid secretion induced by food, histamine, pentagastrin, caffeine and insulin.