Digestive disorders are common, and some pregnant women often experience various digestive symptoms during pregnancy due to changes in hormone levels, such as nausea, vomiting, acid reflux, heartburn, epigastric discomfort, constipation and so on. Severe cases may even affect the pregnancy. If you have digestive system symptoms or combined digestive system diseases during pregnancy, can you use digestive system medications? It is worth noting that the grading is based on the drug hazard class standard designated by the FDA, which is divided into A, B, C, D and X in order. 1, antacids: magnesium aluminum carbonate grade B, pregnant women should use this drug; hydrated aluminum hydroxide grade B, pregnant women should use this drug with caution. 2, H2 receptor antagonists: cimetidine B level This drug can pass the placental barrier, pregnant women are prohibited to avoid causing fetal liver dysfunction; ranitidine hydrochloride B level This product can pass the placenta; famotidine B level Pregnant women use this drug with caution; nizatidine B level This drug experiments show that inhibit the development of mice, pregnant women use with caution. 3, proton pump inhibitors: omeprazole class C, there are reports of congenital anomalies in infants of pregnant women applying this drug, pregnant women are prohibited; lansoprazole class B, animal experiments have not seen the damage of this drug to the embryo, it is recommended that early pregnancy pregnant women prohibit this drug; esomeprazole class B, pregnant women use this drug with caution; rabeprazole class B, animal experiments have observed the toxic effects on the embryo. 4, mucosal protective agents: colloidal bismuth C grade, prohibited for pregnant women; bismuth subsalicylate D grade, prohibited for pregnant women; misoprostol X grade, prohibited for pregnant women because of its contractile effect on the pregnant uterus; aluminum thioglycollate B grade, used with caution in early pregnancy; rebapent, undetermined The safety of the drug during pregnancy has not been determined. 5. Gastrointestinal stimulants: Domperidone, grade C, is recommended to be avoided; Mosapride, undetermined The safety of use in pregnant women has not been determined and is recommended to be avoided. 6. Antiemetics: Metoclopramide Grade B This drug has potential teratogenic risk and is recommended to be prohibited for pregnant women. 7. Laxatives: Bisacodyl Grade B. Pregnant women are advised not to use this drug; polycarbophil calcium Grade B. Animal studies have shown that this drug is not teratogenic. This drug is not absorbed through the intestinal tract, and is safe for pregnant women. 8, digestive drugs: pancreatic enzymes Class C. Pregnant women should use with caution. 9.Biliary drugs: Ursodeoxycholic acid Grade B. Use with caution in pregnancy.