Semglee is a prescription medication used to control high blood sugar in adults and children with diabetes mellitus. It is a long-acting insulin that works by helping the body's cells absorb glucose, thereby lowering levels of glucose in the blood. Semglee is a biosimilar to Lantus, meaning it is highly similar to, but not identical to, the reference insulin glargine product, but it has been shown to have no clinically meaningful differences in terms of safety, purity, and potency. It is administered through subcutaneous injection and is designed to provide a steady level of insulin over a 24-hour period, helping to manage blood sugar levels throughout the day and night. Proper use of Semglee, in conjunction with a healthy diet and regular exercise, can significantly improve blood sugar control and reduce the risk of complications associated with diabetes.