The side effects and contraindications of Toadstool are not clear, Toadstool is cold in nature, people with cold and weak body should avoid taking the medicine as much as possible, taking too much or taking it for a long time may cause abdominal pain and diarrhea. Toadstool has detoxification and swelling, diuresis and itching (promote the discharge of dampness and stop itching) effect. It is used for hemorrhoids, anal swelling and pain, eczema. It can be used externally or decocted to wash the affected area. Toadstool is cold in nature, and prolonged overdose may cause spleen and stomach deficiency (weak and cold spleen and stomach), and patients may experience side effects such as abdominal pain, diarrhea, and bloating. Due to its cold nature, excessive overdose may damage yang qi, so it is not recommended to be taken by those who are weak and have a cold constitution. The drug should be used under the guidance of a professional Chinese medicine practitioner’s diagnosis and should not be used privately, so as not to cause any delay in the condition.