It is a bitter-cold herb that has no effect on constipation, but because of its clearing effect and coldness, eating too much of it can cause more stools or loose stools and diarrhea, which is due to its side effects rather than positive effects. Too much bitter cold medicine will hurt the spleen and stomach, which is in charge of the entire gastrointestinal tract transportation. If the spleen and stomach are deficient in qi, the cold medicine will cause diarrhea, which is caused by spleen deficiency, not normal laxative. If you use this method once in a while it is not a big problem, but to use it often may lead to long-term spleen and stomach weakness in the future, but in the process of treatment of new diseases, so it is not recommended. Generally there are medicines specifically for constipation, and then it is recommended to choose according to the symptoms.