Novolin R is an effective option for patients with Type 2 diabetes whose blood sugars remain poorly controlled despite oral medications or other treatments. It can reliably lower glucose levels and is sometimes necessary when the pancreas is no longer producing enough insulin. However, insulin therapy is more labor-intensive, since it requires injections and regular blood glucose monitoring to adjust dosing and avoid low blood sugar. Because of this, many patients and clinicians try other medications first before transitioning to insulin. When used appropriately, though, it remains one of the most powerful tools for controlling blood sugar.