Welcome tony w. From what I read online, those meds help delay the absorption of starch and also how the body uses insulin. The diabex contains metformin which is one of the safest and most frequently prescribed drugs for diabetes. I'm not a doctor but if you've stopped taking them and you are not diabetic, I doubt that any harm was done - but that needs to be confirmed by some blood tests.
I am puzzled as to how your doctor says this was a "mistake" and that you don't have diabetes!? How was this mistake made? Did blood tests get mixed up? Do you know what your blood sugar tests were at your supposed diagnosis? During the time that you were on them, were you testing your blood sugar?
On a side note, there have been some studies that metformin is beneficial to cancer patients.
I hope you are doing well! That's a strange experience. Are you going to change doctors?
diabetes type 2 controlled by diet and exercise and
very low carb way of eating