Rosiglitazone is a medication used to treat type 2 diabetes by improving insulin sensitivity. It belongs to a class of drugs called thiazolidinediones, which help the body use insulin more effectively. This can lead to better blood sugar control for individuals with diabetes. The drug works by activating a receptor in the body known as PPAR-gamma, which plays a role in fat and glucose metabolism. While Rosiglitazone can be effective, it has been associated with potential side effects, including an increased risk of heart problems, leading to careful consideration by healthcare providers when prescribing it.