Prebiotics is a probiotic product, there is no special requirement on when to take it, relatively speaking, the effect may be better if you take it before meals, 1~2 times a day. Prebiotics for dietary supplements, not drugs, its main ingredient is not digested oligosaccharide, can improve the intestinal environment, stimulate the intestinal beneficial flora, promote the growth of beneficial bacteria, to maintain the stability of the intestinal flora, to promote gastrointestinal peristalsis, to remove intestinal waste, constipation can be consumed in moderation. It is currently believed that taking prebiotics on an empty stomach can make its contact with the intestinal flora more adequate and better function. But probiotics are not drugs, can not replace the role of drugs, physical discomfort need to consult a doctor in time.