The claim that eating fishweed must cause cancer is not scientific. Fishbulb contains aristolochic acid, a class 1 carcinogen, but it is controversial whether its content is directly carcinogenic. When consumed as an ingredient, every 100 grams of fishweed contains 10.7 grams of carbohydrates, 9.6 grams of dietary fiber, 2.1 grams of protein and other nutrients, of which the water content is about 84%, can be used as a source of water, fiber and other nutrients to replenish the source. When used as a medicinal herb, Fishweed is pungent in flavor and slightly cold in nature. It has the effect of clearing away heat and detoxification, eliminating carbuncle and draining pus, diuretic and diaphoretic. It can be used for lung carbuncle spitting pus, phlegm-heat asthma and cough, hot diarrhea, hot showers, carbuncle sores and poisonous diseases. Fishwort contains the class 1 carcinogen aristolochic acid (World Health Organization Agency for Research on Cancer), but the amount of aristolochic acid in fishwort is limited, and it is debatable whether or not the amount is directly carcinogenic when consumed normally. There are no known adverse effects or contraindications to its use, but it should not be taken by those who are allergic to it. When used as a medicinal herb, it should be used in accordance with medical advice.