Rosiglitazone is a medication used to treat type 2 diabetes by helping to control blood sugar levels. It belongs to a class of drugs called thiazolidinediones, which work by increasing the body's sensitivity to insulin, a hormone that regulates blood sugar. This medication is typically prescribed when other treatments, such as lifestyle changes and other diabetes medications, are not sufficient. However, rosiglitazone has been associated with certain risks, including heart problems, which led to restrictions on its use in some countries. Regular monitoring by a healthcare provider is essential for patients taking this medication.