Dazhongyin Pill has the effect of nourishing yin and lowering fire (nourishing yin essence and lowering fire), and the side effects are not clear yet. Dahuayin Pill is a medicine that nourishes kidney yin and consists of salt Zhimu, ripened dihuang, salt cypress, pig spinal cord and vinegar tortoise shell. This medicine has the effect of nourishing yin and lowering fire, and is suitable for symptoms of yin deficiency and fire (deficiency of yin and essence in the body, resulting in hyperactive fire), cough, tinnitus, spermatorrhea, hot flashes (bursts of heat), and night sweating. It is not suitable for people with colds and fever and those who are allergic to this medicine. The side effects of this medicine are not yet clear, and it is recommended to stop the medicine and go to the hospital if there is no improvement in the condition after 4 weeks of using the medicine. People suffering from hypertension, heart disease, diabetes and other chronic diseases, as well as pregnant women, children, lactating women and other patients, need to use the drug under the guidance of a doctor. If you need to use the drug, please use under the guidance of a professional physician, do not take it on your own, so as not to affect your health.