What's the most effective medication for diabetes?

It depends: It depends about all the evaluation, the blood glucose, the glycosylated hemoglobin level, creatinine levels, age, weight, comorbidity. All diabetes medication is effective, it just depends on what exactly you need as patient to be in control.

Type 1, 2, or other?: The treatment approach varies depending on an individual’s type of diabetes, health conditions, physical characteristics, etc. In general, insulin treatment is essential for type 1 diabetes and metformin is preferred for the treatment of type 2 diabetes. However, the determination of which medication is the most effective one for you will require office visits with your doctor.