Fishwort in water may have the effects of clearing heat and diuretic, but the infusion may not be able to completely precipitate the active ingredients of the drug, so the efficacy is limited.
Fishweed is the fresh whole grass or dried above-ground part of Houttuynia cordata, family Sambucus, which is pungent in flavor and slightly cold in nature. It belongs to the lung meridian. It can clear away heat and detoxify toxins, eliminate carbuncles and expel pus, and diuretic and diaphoretic (improve the problem of dribbling in urine, and the problem of small amount of urine not being able to pass).
Fishwort can be used for lung carbuncle (mainly characterized by cough, chest pain, fever, vomiting foul-smelling pus and blood), spitting pus, phlegm-heat asthma and cough, hot dysentery, hot showers (burning and tingling during urination, accompanied by frequent urination and urgent urination, and discomfort of abdominal traction), carbuncle, sores and poisons.
Fishweed is cold, so patients with cold and yin sores should not take it. If you need to use the drug, it is recommended to go to the hospital in time, under the guidance of a professional physician.