Tammy if your mothers doctor said not to be concerned unless her reading is 400, she needs another doctor.
Readings at 150 or 200 is too high and will cause a lot of problems down the road. Diabetes affects all vital organs and your mother needs help in getting in better control..As for the pills, there are many different medications so it is hard to guess what he gave her.
I treat my diabetes with herbal remedies, vitamins, minerals and etc. but that comes after years of experience and research on my part. The big advantage is there are no side effects with herbs like prescription meds..
Good luck and keep us posted