Some Diabetes drugs may increase heart risks. Two of the more common classes of meds used to lower blood sugar levels among people afflicted with type 2 diabetes appear to raise the risk of heart attacks, strokes, and heart failures. When analyzing the data collected on over 130,000 adults with type 2 diabetes, it was found that sulfonylureas is associated with a 36% greater risk of heart related complications, while basal insulin almost doubles the risk for heart disease and stroke. The information here suggests that the control of type 2 diabetes through diet and exercise is all the more important.

Source - JAMA in 2018.