中药除药用植物、动物外,还有某些金属药物,如铅丹、砒石、轻粉等。应用这些金属药物治疗癫痫、哮喘和牛皮癣等疾病,有一定的疗效。但因其多具有毒性,近已少用。鉴于上述疾病较为顽固难愈,至今尚无特殊治疗方法,故目前仍有人使用含有金属药物的偏方、验方治病。倘若金属药物用量过大或使用不当,就可发生金属中毒。 Chinese medicine in addition to medicinal plants, animals, there are some metal drugs, such as lead Dan, stone, light powder. The use of these metal drugs in the treatment of epilepsy, asthma and psoriasis and other diseases, have a certain effect. But because of its many toxic, almost no use. In view of the above-mentioned diseases more stubborn refractory, so far no special treatment, so there are still people using prescriptions containing metal drugs, prescription treatment. Metal poisoning can occur if the amount of metal drug used is too large or not used properly.