The medicinal parts of forsythia are the first ripe as well as ripe fruits. Forsythia is the dried fruit of the plant Forsythia, family Mulleinaceae. It is harvested in the fall when the fruit is still green and impurities are removed, steamed and dried in the sun, which is known as “green forsythia”; when the fruit is ripe, it is harvested and dried in the sun, and impurities are removed, which is known as “old forsythia”. When used as a traditional Chinese medicine, it has a bitter flavor and is slightly cold in nature. It has the functions of clearing heat and removing toxins (removing heat and toxins from the body), subduing swellings and dispersing knots, and evacuating wind-heat. It can be used for carbuncle (a kind of poisonous sore, occurring on the body surface, limbs, internal organs of acute suppurative diseases), scrofula (mainly refers to the neck lymph node tuberculosis), breast carbuncle, dengtoxin (an acute infectious disease, can be seen in the skin red like paint), wind-heat cold, the first signs of warm disease, warm heat into the camp, high fever and thirst, dizziness and spotting, feverish gonorrhea (burning and stinging pain when urinating, accompanied by frequent urination and urination, abdominal pulling and discomfort), and astringent pain. . The adverse effects of the drug as well as contraindications for taking it have not been clarified. However, if you want to take forsythia as a drug, you need to follow the guidance of a professional physician to identify the evidence of the use of drugs, do not arbitrarily change the composition of the drug, the dose of the drug and the way to take. If you experience discomfort after taking the drug, go to the hospital in time.