Insulin is a hormone that works by lowering levels of glucose (sugar) in the blood. Tresiba is a long-acting insulin that starts to work several hours after injection and keeps working evenly for 24 hours.
Tresiba is used to improve blood sugar control in adults with diabetes mellitus.  Tresiba may be used for type 1 or type 2 diabetes.
Tresiba may also be used for purposes not listed in this medication guide.
