Angong Niuhuang Wan has the effects of clearing heat and removing toxins (removing heat and evil qi from the body), resolving phlegm and opening the orifices (opening the orifices of the heart and restoring sanity by removing phlegm and evil). It is often used in the treatment of febrile illnesses where evil enters the pericardium, febrile convulsions (convulsions and seizures due to high fever), delirium tremens (confusion and gibberish), and strokes. Side effects such as hypothermia and allergic reactions may occur. Angong Niuhuang Pill belongs to the category of proprietary Chinese medicines, and its main ingredients include in vitro cultivated oxalis, concentrated powder of buffalo horn, artificial musk, pearl, vermilion sand, and andrographis, and so on. Among them, in vitro cultivated cow’s rhubarb can clear the heart, expel phlegm, and open the orifices; pearl can tranquilize the mind, calm the mind, detoxify the toxin, and produce muscles. The combined use of the above medicines has the effect of clearing heat and removing toxins, resolving phlegm and opening the orifices. Angong Niuhuang Wan is often used in the treatment of fever, evil into the pericardium, high fever convulsions, delirium; stroke coma and encephalitis, meningitis, toxic encephalopathy, cerebral hemorrhage, septicemia and so on. Side effects such as hypothermia and allergic reactions may occur during the use of this drug. Note that pregnant women should use it with caution. Use with caution in athletes. It is recommended that patients must take the drug under the guidance of a physician, and not blindly buy it on their own.