Senna has a degree of liver damage. Senna leaf, also known as bubble bamboo leaf, is a laxative Chinese medicine, sweet, bitter, cold, to the large intestine meridian. It has the efficacy of diarrhea and stagnation, laxative, diuretic, and can be used for heat stagnation, constipation and abdominal pain, edema and bloating. Senna is strong in attacking, so it is forbidden for pregnant women, women during lactation and menstruation; excessive dosage can lead to nausea, vomiting, abdominal pain and other side effects, so it is not advisable to take too much. Senna has laxative, antibacterial, antiemetic, antispasmodic, anti-gastric mucosal damage and other pharmacological effects. This product contains double anthraquinones, if taken in large quantities over a long period of time, the anthraquinones produced by the metabolism of senna leaves active products will be toxic to liver cells, resulting in liver damage. Senna should not be eaten with spicy and stimulating foods, such as spicy hot pot, onions, garlic, ginger, etc.. Senna should be taken under the guidance of a doctor, and should not be used without authorization.