The generic name of Bayerisin is acarbose, and bubbles in urine generally refers to foamy urine, which usually does not appear after taking acarbose treatment. Foamy urine may be caused by physiological factors, or may be caused by diabetic nephropathy, nephrotic syndrome and other disease factors. Acarbose is an oral hypoglycemic drug, mainly used for the treatment of type 2 diabetes mellitus. Adverse reactions such as flatulence and bowel sounds, occasional diarrhea and bloating may occur after use of the medication, but usually do not cause bubbles in the urine. It is contraindicated in patients who are allergic to the components of acarbose, chronic gastrointestinal dysfunction with significant digestive and absorption disorders, and severe renal insufficiency. Normal people in the process of urination, urine can impact a small amount of foam, such a situation is a normal phenomenon; in addition, diabetic patients with diabetic nephropathy or nephrotic syndrome and other diseases, the protein content in the urine is elevated, which can lead to foam urine. Diabetics taking acarbose are advised to seek medical attention if they experience foamy urine.