Lactose intolerance, eating probiotics does not help much. With lactose intolerance, special attention should be paid to the diet, and if you eat food in this area, you will be prone to diarrhea. The therapeutic effect of probiotics is limited; it is mainly for treating diarrhea due to dysbiosis in the intestinal tract. For example, if you take broad-spectrum antibiotics that lead to a secondary infection in the intestine, you can use probiotics to help restore the normal flora in the intestine, thus treating diarrhea caused by dysbiosis in the intestine.