Constipation fruit if taken within a short period of time can play the role of laxative, there is no side effect. But if a large number of long-term taking constipation fruit, or lifelong reliance on constipation fruit to laxative, there will be considerable side effects, mainly in the following aspects: 1, constipation fruit has the effect of stimulating the peristalsis of the gastrointestinal tract, a large number of long-term taking will lead to an increase in the speed of gastrointestinal peristalsis, the effect of osmotic diarrhea significantly increased, there will be, for example, thin stool, watery stool, etc. 2, constipation fruit to promote the peristalsis of the gastrointestinal tract at the same time, and 3, long-term large amounts of constipation fruit will increase the burden on the liver and kidneys.