Lactasexan is mainly used for dyspepsia, intestinal flora imbalance, bloating caused by abnormal fermentation in the intestines, diarrhea and diarrhea caused by improper diet in children; it can also be used as an adjunctive treatment for secondary infections caused by the long-term use of broad-spectrum antibiotics; externally, it can be used for the treatment of bacterial vaginal infections due to bacterial flora imbalance. Lactasexan is a kind of live bacteriocin preparation, white or light yellow dry powder, slightly odor, tasteless, almost insoluble in water. Lactasexan is a dry preparation of artificially cultured live Enterococcus lactis or Lactobacillus lactis, which can decompose sugar to produce lactic acid in the intestinal tract and increase the acidity in the intestinal tract, thus inhibiting the reproduction of spoilage bacteria in the intestinal tract, and preventing protein fermentation, reducing gas accumulation in the intestinal tract, and helping to promote digestion and stop diarrhea. It is contraindicated for those who are allergic to Lactasexan. Lactasexan should be used under medical supervision and should not be taken without authorization.