This product is a calcium supplement. Calcium ions can maintain normal excitability of nerves and muscles and promote the secretion of acetylcholine by nerve endings. When serum calcium is low, the excitability of nerves and muscles may increase, resulting in convulsions. When blood calcium is too high, the excitability may decrease, resulting in weakness. Calcium ions can improve the permeability of cell membranes, increase the density of capillaries, reduce exudation, and have an anti-allergic effect. Calcium ions can promote the calcification of bones and teeth. There is a competitive antagonism between high concentrations of calcium and magnesium ions, which can be used to rescue magnesium poisoning; calcium ions can react with fluoride to form insoluble calcium fluoride, which can be used to rescue fluoride poisoning.

This product is a chloramphenicol antibiotic. It has a broad-spectrum antimicrobial effect in vitro, including aerobic Gram-negative and Gram-positive bacteria, anaerobes, Rickettsia, spirochetes and Chlamydia. It has bactericidal effects on the following bacteria: Haemophilus influenzae, Streptococcus pneumoniae and Neisseria meningitidis. It only has an antibacterial effect on the following bacteria: Staphylococcus aureus, Streptococcus pyogenes, Streptococcus viridans, Group B hemolytic Streptococcus, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Salmonella typhi, Salmonella paratyphi, Shigella, Bacteroides fragilis and other anaerobic bacteria. The following bacteria are usually resistant to chloramphenicol: Pseudomonas aeruginosa, Acinetobacter, Enterobacter, Serratia marcescens, indole-positive Proteus, methicillin-resistant Staphylococcus and Enterococcus.

This product is a broad-spectrum antibiotic whose mechanism of action is to inhibit bacterial protein synthesis. It is effective against most Gram-negative and some Gram-positive bacteria, as well as Chlamydia trachomatis and Rickettsia.

This product is a broad-spectrum antibiotic, the mechanism of action is to inhibit bacterial protein synthesis, and is effective against most Gram-negative and some Gram-positive bacteria, as well as Chlamydia trachomatis and Rickettsia.

Timolol maleate is a non-selective β-adrenergic receptor blocker with no significant endogenous sympathomimetic activity and local anesthetic effect, and no direct inhibitory effect on the myocardium. Its effect of reducing intraocular pressure is related to reducing aqueous humor production.