Suggest Medication For Diabetes

Hi, I am Uday Kumar. My wife aged about 60 years, recently suspected diabetes as she was often going for urination during night. On testing her blood we found fasting sugar as 134. Subsequently we went for HbA1C test which showed 8.4. As I am suffering from diabetes for last about 10 years, analysis of reports tell that she has been suffering from diabetes since quite some time but has been detected now after some symtoms appeared. Please suggest medication. Regards, Uday Kumar