The common name for the prescription drug used to treat diabetes is "insulin." Insulin is a hormone produced by the pancreas that regulates blood sugar levels. In people with diabetes, particularly type 1 diabetes, the body does not produce enough insulin, so it must be administered through injections or pumps. For those with type 2 diabetes, insulin may be used if other medications or lifestyle changes are inadequate in managing blood sugar levels. Insulin therapy is crucial for maintaining proper glucose control and preventing complications associated with diabetes, including cardiovascular disease and nerve damage.