It acts on the erythrocytic stage of malarial parasites, affects the surface membrane and mitochondrial function of the parasite, blocks its supply of host erythrocyte substances as nutrition, and kills the asexual body of malarial parasites. It has a rapid effect and is effective against multidrug-resistant malaria. It has a strong and rapid killing effect on the erythrocytic stage of malarial parasites, and can quickly control clinical attacks and symptoms. The mechanism of action of artemisinin is mainly to interfere with the mitochondrial function of the surface membrane of malarial parasites, and changes its membrane structure by affecting the ultrastructure of the erythrocytic stage of malarial parasites, blocking the malarial parasite's nutrient intake, causing it to lose a large amount of cytoplasm and nutrients and die. Its mode of action is through its internal peroxide (dioxygen) bridge, mediated by the free iron produced after the decomposition of hemoglobin, to produce unstable organic free radicals and/or other electrophilic mediators, and then form covalent adducts with malarial parasite proteins, causing the malarial parasite to die.

It has both histamine H1 receptor antagonism and the effect of inhibiting the release of allergic reaction mediators. It not only has a strong anti-allergic effect, but also has a longer duration of efficacy. Therefore, it is more effective in preventing various bronchial asthma attacks and exogenous asthma than endogenous asthma.

It can counteract the capillary dilation caused by allergic reactions, reduce capillary permeability, have a mild bronchial smooth muscle spasmolysis effect, and also has a significant central nervous system sedative effect and a certain antitussive effect.

A strong expectorant that increases the secretion of respiratory glands, dilutes sputum, and makes it easier to cough up.

Salt expectorants can reflexively increase the secretion of respiratory mucosal glands, making sputum easier to cough up and facilitating the removal of sticky sputum.