Diet, exercise, and weight loss can improve glycemic control, but almost all patients with type 2 diabetes require antihyperglycemic drug therapy. Treating to a target A1C of <7% while minimizing hypoglycemia is recommended to prevent microvascular complications of diabetes (retinopathy, nephropathy, and neuropathy). An A1C target of <8% may be appropriate for some older patients.

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Diet, exercise, and weight loss can improve glycemic control, but almost all patients with type 2 diabetes eventually require drug therapy. Treating to a glycated hemoglobin (A1C) concentration of <7% can prevent microvascular complications (retinopathy, nephropathy, and neuropathy), but whether it prevents macrovascular complications and death is unclear. An A1C target of <8% may be appropriate for older patients and those with underlying cardiovascular disease (CVD), a history of severe hypoglycemia, diabetes-related complications, a limited life expectancy, or a long duration of disease.

The FDA has approved the sodium-glucose co-transporter 2 (SGLT2) inhibitor ertugliflozin (Merck) for treatment of adults with type 2 diabetes, both alone (Steglatro) and in fixed-dose combinations with metformin (Segluromet) and sitagliptin (Steglujan). Ertugliflozin is the fourth SGLT2 inhibitor to be approved in the US. All four are available in combination with metformin and three are available in combination with a dipeptidyl peptidase-4 (DPP-4) inhibitor (see Table 3).

The FDA has approved Qtern (AstraZeneca), a fixed-dose combination of the sodium-glucose co-transporter 2 (SGLT2) inhibitor dapagliflozin (Farxiga) and the dipeptidyl peptidase-4 (DPP-4) inhibitor saxagliptin (Onglyza), for oral treatment of adults with type 2 diabetes. Dapagliflozin and saxagliptin have each been available for years alone and in combination with extended-release metformin (Xigduo XR; Kombiglyze XR). Three SGLT2/DPP-4 inhibitor combinations are now available in the US (see Table 2).

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