Pregnant women with diarrhea can take Simethicone, Simethicone, or montelukast, is an intestinal adsorbent that can adsorb pathogenic microorganisms such as viruses and bacteria in the intestinal tract as well as the toxic and harmful substances produced by them to achieve the purpose of treating diarrhea. Montelukast can adsorb excessive fluid in the intestinal tract, has a better effect on diarrhea, montelukast has a certain protective effect on the mucosa of the gastrointestinal tract, can alleviate the symptoms of pain, because the montelukast only plays a role in the intestinal tract, is not absorbed into the bloodstream, pregnant women taking it will not adversely affect the development of the fetus. Montelukast adsorbs harmful substances and excess fluid in the intestinal tract, but also adsorbs drugs into the intestinal tract to affect the efficacy of the drug, you should consult the attending physician before using the drug, under the guidance of the doctor to use the drug reasonably.