Generally, Lansoprazole and Magnesium Aluminum Carbonate can be taken together, although they should be taken under a doctor’s supervision. Lansoprazole is a proton pump inhibitor that inhibits gastric acid secretion and is indicated for gastric and duodenal ulcers, reflux esophagitis, and Droege-Ayer syndrome. Lansoprazole occasionally triggers side effects such as diarrhea, bloating, thirst, constipation, headache, drowsiness, anemia, and possible allergic reactions in individual patients. It is contraindicated for those who are using atazanavir sulfate and are allergic to the components of this drug; use with caution in liver injury, pregnant women, and lactating women. Magnesium aluminum carbonate can neutralize gastric acid, protect gastric mucosa, adsorb part of the bile acid, applicable to chronic gastritis and gastric acid-induced stomach pain, heartburn, fullness, acid belching. Occasional side effects such as loose stools, dry mouth, loss of appetite, constipation, etc., may cause gastrointestinal discomfort when used in large quantities, and long-term use may cause changes in serum electrolytes. Allergic to this drug, severe renal insufficiency, hypophosphatemia and other patients are prohibited. Use with caution in the first 3 months of pregnancy, hypermagnesemia, hypercalcemia, and severe cardiac insufficiency. The two drugs can usually be taken together, it is recommended to follow the guidance of a specialized doctor.