Do away with three shots a day when you manage your blood glucose levels with a once daily shot of prescription Lantus. A long-lasting insulin, Lantus is intended to treat people with diabetes safely, easily and effectively. Frustrated with finding the time to take your insulin not once, not twice but three times a day? Lantus gives you the freedom of a daily dose of insulin, each day, every day. Manage your diabetes better and take control of your life with Lantus.