Angong Niuhuang Pills cannot be taken as a preventive measure, it belongs to the category of emergency medicine and can only be taken at the onset of illness. The drug composition of Angong Niu Huang Pills is buffalo horn, cowhuang, artificial musk, tulip, pearl, cinnabar, andrographis paniculata, yellow rhubarb, icicle, gardenia, scutellaria and so on. It is effective in clearing heat and removing toxins (removing heat and toxins from the body), opening the orifices and awakening the mind (opening the orifices of the brain and clearing the mind). It is usually used to treat symptoms such as delirium (confusion, babbling) caused by heat entering the pericardium (heat evils invading the pericardium) and high fever and fainting. The contraindications and adverse reactions of Angong Niuhuang Wan have not been clarified. Pregnant women are not allowed to take this drug and it is not recommended for athletes. This drug is an emergency remedy, which needs to be taken at the onset of the disease, and can not be taken as a daily preventive. The use of the drug needs to be under the guidance of a physician, and if you feel unwell, it is recommended to go to the hospital in time.