Diax 220 mg syrup UAE Diax is used to treat acute and chronic diarrhea caused by bacteria such as staphylococci and streptococci, as well as some gram-negative bacteria such as salmonella, shigellosis, klebsiella, and Escherichia coli. Diax in uae also treats diarrhea associated with food poisoning, appendicitis, and chronic autoimmune gastritis.