This product is a calcium channel blocker that can prevent cell damage caused by pathological intracellular calcium overload due to ischemia and other causes; it has the effects of relieving vasospasm, vestibular inhibition, anti-epileptic effect, myocardial protection, improving renal function and anti-histamine.

This product is a broad-spectrum antifungal drug. Its mechanism of action is to inhibit the synthesis of cell membranes. It has antibacterial effects on dermatophytes and Candida.

It is a nucleoside diphosphate reductase inhibitor that can prevent nucleotides from being reduced to deoxynucleotides, interfere with the biosynthesis of purine and pyrimidine bases, selectively inhibit DNA synthesis, and have no blocking effect on RNA and protein synthesis. It is a cycle-specific drug, and is sensitive to S-phase cells.

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 influenza bacilli, 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 streptococci, 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, enters bacterial cells by diffusion, and reversibly binds to the 50S subunit of the bacterial ribosome, inhibiting the action of transpeptidase and preventing protein synthesis.

Guaifenesin is an expectorant that can stimulate the gastric mucosa reflex to increase the secretion of bronchial mucosal glands, reduce the viscosity of sputum, and make sticky sputum easier to cough up.