In such case you should be assessed (antibody tests) to see what type of
diabetes you have.
Type 2, or adult onselt
type 1 (sometimes referred to as LADA). If you have
type 2, medications may be appropriate, but if you have adult onset type 1, typically the most appropriate medication can be a very low dose of insulin, which by normalizing blood sugars and thus delay progression of diabetes.
I can recommend the book "diabetes Solutions", but Dr. Richard Berstein.