A 77-year-old man is in for a routine follow up visit. He has its twenty-year history of type 2 diabetes and hypertension as well as a 5-year history of stage 3B chronic kidney disease, or CKB. At this visit, his A1C is 8.4% and his estimated GFR is 42 mL per minute. His BP is 128/76. He states he's feeling well and denies headache, visual changes, dizziness and hypoglycemic episodes. His medications include metformin, amlodipine, lisinopril and rosuvastatin. In reviewing his current medicati...