Compound Digestive Enzymes and Aluminum Thiosulphate should not be taken together. Compound digestive enzymes should be taken after meals, while aluminum sulfate should be taken on an empty stomach one hour before meals. Compound digestive enzyme is a kind of drug often used in the clinic to treat dyspepsia, mainly containing pepsin, trypsin, amylase, cellulase and other enzyme components. When the patient occurs indigestion, abdominal pain and bloating and other symptoms, you can use this kind of drug. Aluminum thioglycollate is commonly used in the clinic for diseases of gastric mucous membrane damage, such as gastric ulcer, acute or chronic gastritis. The main ingredient is aluminum thioglycollate, whose function is to neutralize gastric acid, protect the gastric mucosa, form a protective layer on the surface of the gastric mucosa, and protect the gastric mucosa from external stimuli. In the instructions of the two drugs, it is clearly mentioned that compound digestive enzymes should be taken after meals, while aluminum sulfate should be taken on an empty stomach one hour before meals. So the two medicines should not be taken together. Patients who are allergic to these two medicines are forbidden to use them.