People with weak lungs should eat less platycodon, and pregnant women should not eat it. Normal people should not take too large an oral dose, otherwise it will easily cause nausea and vomiting. Oral administration is irritating to the throat and gastric mucosa. People with tuberculosis and gastric ulcers who have bleeding tendencies should use with caution. It can directly dilate peripheral blood vessels and may cause hypotension. Some patients may have special sensitivity to it.