When diarrhea occurs after taking antibiotics, it is mostly due to the antibiotics playing an antibacterial and bactericidal role after entering the intestinal tract, so it will also destroy the normal flora of the intestinal tract, resulting in diarrhea due to dysbiosis of intestinal flora. The micro-ecological environment in the intestinal tract is maintained by the normal intestinal flora, and the normal flora can play a role in aiding digestion, once the dysbiosis of the flora may lead to diarrhea, and in serious cases may even cause infectious diseases. So if diarrhea occurs while taking antibiotics, it can be temporarily untreated and may be relieved on its own after stopping the medication. If the diarrhea is heavy or does not ease after a period of time, it is best to treat it with both anti-diarrheal medication and probiotics to restore the intestinal flora. However, be careful not to take antibiotics and probiotics at the same time, and take them at least 2-3 hours apart.