Antihistamines can counteract the dilation of capillaries caused by allergic reactions, reduce capillary permeability, have a mild spasmolytic effect on bronchial smooth muscle, and also have obvious central sedative and certain antitussive effects.

Expectorants increase the secretion of respiratory glands, dilute sputum, and make it easier to cough up

Non-addictive antitussive drug with central and peripheral antitussive effects, which can slightly inhibit bronchial receptors and weaken cough reflex

H2 receptor antagonist, significantly inhibits the basal and nocturnal gastric acid secretion in normal people and ulcer patients, as well as the gastric acid secretion caused by pentagastrin, histamine and meals; intravenous injection can reduce gastric acid secretion by 90%; has a certain inhibitory effect on the secretion of pepsinogen; has a protective effect on experimental gastric mucosal damage and acute ulcers; has no effect on the secretion of gastrin and sex hormones.

This product is an H2 receptor antagonist. It replaces the imidazole ring of cimetidine with a furan ring. It has a higher selectivity for H2 receptors and can significantly inhibit the basal and nocturnal gastric acid secretion of normal people and ulcer patients, as well as the gastric acid secretion caused by pentagastrin, histamine and meals. Its gastric acid inhibition effect is 5 to 12 times stronger than that of cimetidine. Intravenous injection of this product can reduce gastric acid secretion by 90%; it has a certain inhibitory effect on the secretion of pepsinogen. It has a protective effect on experimental gastric mucosal damage and acute ulcers. It has no effect on the secretion of gastrin and sex hormones.

Azithromycin is a 15-membered macrolide antibiotic that has antibacterial effects on a variety of Gram-positive aerobic bacteria, Gram-negative aerobic bacteria, anaerobic bacteria, sexually transmitted disease microorganisms and other microorganisms. It mainly binds to the 50S subunit of the bacterial ribosome and inhibits RNA-dependent protein synthesis.

Azithromycin is an azalide antibiotic that interferes with protein synthesis (without affecting nucleic acid synthesis) by binding to the 50s ribosomal subunit of sensitive microorganisms. It is effective against a variety of pathogens, including Gram-positive aerobic microorganisms, Gram-negative aerobic microorganisms, anaerobic bacteria, sexually transmitted disease microorganisms and other microorganisms.