Diabetes Home > How Does Lantus Work?

Normally, your body is able to maintain proper levels of sugar in your blood and inside your cells. However, you may need to take insulin if your pancreas has trouble making enough, which is the case in people with type 1 diabetes and in some people who have type 2 diabetes. If you have been diagnosed with either type, your healthcare provider may recommend a drug called Lantus® (insulin glargine).
How does it work? Although the drug is a solution (liquid) before injection, once Lantus is injected, it forms small particles that dissolve slowly and evenly over time. As a long-acting insulin, Lantus works as a "basal" insulin, which means that it provides a steady background level of insulin to help control blood sugar throughout the day.
For controlling a spike in blood sugar levels after meals, other types of insulins may need to be used in addition to Lantus.
(To learn more about how this drug works, click Lantus. This article gives a complete overview of what the medication is used for, what to expect while taking it, side effects to be aware of, and more.)
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Last reviewed by: Kristi Monson, PharmD;
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