Dried fritillary infusion may have the efficacy of clearing away heat and detoxification, diuretic, etc. It can be used for carbuncle (a condition in which sores develop on the leaves of the lungs and pus ulcers are formed), hot dysentery, and so on. Fishweed is the fresh whole grass or dried above-ground part of Houttuynia cordata, family Sambucus. It is pungent in flavor and slightly cold in nature. Attributed to the lung meridian. It can clear away heat and detoxify toxins, eliminate carbuncle and expel pus, diuretic and diaphoretic (improve the problem of dribbling and urination, and the problem of small and impassable urination). It is used in treating lung carbuncle and spitting out pus, phlegm-heat asthma and cough, hot diarrhea, heat drenching (burning and stinging pain is obvious when urinating, accompanied by frequent urination and urgency, and discomfort of traction in the abdomen), carbuncle, swelling, and sores. As the active ingredients of Fritillary may not be completely precipitated out by soaking in water, the efficacy is limited. It is recommended to use the medicine under the guidance of a doctor, and do not take it on your own.