Taking probiotics is mainly applied to treat diarrhea. If diarrhea occurs instead of taking probiotics, it should be considered that there is what is called extinction reaction in medical science. Because the patient’s body has more harmful flora and less beneficial flora, suddenly a large amount of beneficial bacteria is added outside the body, which will cause the body to have an adverse reaction, so diarrhea will occur, this situation is called the extinction reaction. But the extinction reaction will not last long, most of them will disappear in 1-2 days. After taking probiotics, it is possible that the probiotics just entering the body will compete with the harmful bacteria in the body, which may cause diarrhea in the process of competition, but as long as the intestinal flora is stable, the diarrhea symptoms can disappear. Therefore, if you eat probiotics diarrhea, you can temporarily observe 1-2 days, if the symptoms do not improve, it is recommended to go to the hospital for consultation.