Insulin Glulisine is a rapid-acting insulin used to manage blood sugar levels in people with diabetes. It helps the body use glucose effectively, especially after meals. This insulin starts working quickly, usually within 15 minutes, and its effects can last for about 3 to 5 hours. Patients typically inject Insulin Glulisine just before or shortly after eating. It is often used in combination with longer-acting insulins to provide better overall blood sugar control. Like other insulins, it is essential to monitor blood sugar levels regularly while using this medication.