For the demand of curative effect, bezoar, rhinoceros horn (buffalo horn), realgar, coptis root, scutellaria root, gardenia and other drugs in angong prescription belong to cold products, which play a role in clearing away heat and toxic materials, but also lead to great coldness of angong, which is easy to damage people's spleen and stomach after long-term use. Use with caution in patients with hepatic and renal insufficiency and pregnant women. Therefore, you must follow the doctor's advice when taking angong. However, some brands of Niuhuang Qingxin Pills can be taken as daily health care for a long time. As the predecessor of Angong Niuhuang Pill, Niuhuang Qingxin Pill can also be used to treat many diseases caused by phlegm-heat disorder. Besides, on the basis of clearing away heart-fire and detoxicating, this prescription adds ginseng, cinnamon, Poria and other products that can tonify qi and blood, which has the dual effects of inducing resuscitation, dredging collaterals and regulating qi and blood, and is warm and cool in nature, neither cold nor hot. It is safer and more beneficial to the human body than a single drug (Angong Niuhuang Pill).