Simethicone Montelukast is generically known as Montelukast, which can be taken by pregnant women in late pregnancy, but should be taken in accordance with the doctor’s instructions. Montelukast is a western medicine, belongs to the antidiarrheal medicine, suitable for adults and children with acute and chronic diarrhea. Montelukast is a mineral, and will not be absorbed in the intestine, so it will not cause adverse effects on the fetus. If diarrhea occurs in late pregnancy, you can take montelukast to stop diarrhea, but follow the doctor’s instructions to take. It should be noted that a small number of patients may experience mild constipation while taking montelukast, so it is important to observe your own situation after taking montelukast in late pregnancy, and if the diarrhea symptoms are reduced, you should stop taking montelukast. Contraindications to Montelukast are not clear, but it is contraindicated for those who are allergic to the product, and should be used with caution for those with allergies. If diarrhea is severe in late pregnancy, Montelukast should be taken under medical supervision. During the period need to pay attention to diet, avoid excessive spicy and stimulating food intake. If you are using other drugs, consult your physician or pharmacist before taking Montelukast.