Who should not take Precose?

You should not take the diabetes drug Precose (acarbose) if you know you're allergic to it, or if you have the liver condition called cirrhosis or a condition called diabetic ketoacidosis. You should also not take it if you have inflammatory bowel disease or other intestinal problems, or if your kidneys don't work well. Make sure your doctor knows your complete medical history before you start taking Precose for type 2 diabetes.