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Already on LANTUS® FAQs

The questions and answers on this page are for educational purposes only. If you have questions about your health or treatment, please ask your doctor or healthcare provider.

Q: Can I use LANTUS® along with short- or rapid-acting insulins?
A: Yes. LANTUS® can be used with mealtime insulins. LANTUS® helps control blood sugar levels between meals and overnight. Mealtime insulin (short- or rapid-acting insulin) is taken with meals and snacks to control blood sugar spikes caused by food. So your doctor may prescribe a mealtime insulin to work with LANTUS®.

Q: How much can I exercise while taking LANTUS®?
When you exercise, your muscles use up sugar. The harder you work out, the more your blood sugar levels fluctuate. That’s why before starting any exercise program, talk to your doctor first. Generally, people with diabetes should always exercise in moderation, and make sure they have food and water with them.

Q: What should I do if I become pregnant?
A: LANTUS® has not been studied in pregnant women. It is important to maintain good blood sugar control throughout pregnancy. If you’re pregnant, call your doctor immediately to learn how to manage your blood sugar.

Q: Will I always be on the same dose of LANTUS®?
A: Probably not. At first, your healthcare provider may adjust your dose of LANTUS® to find what works for you. You may start with a low dose to see how well LANTUS® helps control your blood sugar. Once you are comfortable with your starting dose, your healthcare provider may increase the amount. This change is a normal part of the process of improving your blood sugar levels. If, after you start taking LANTUS®, your blood sugar level stays too high, and your healthcare provider doesn’t change your dose, ask why.

Q: Does taking more insulin mean I am getting worse?
A: No, not necessarily. Your healthcare provider is just finding the right dose for your body. Different people need different doses of LANTUS®. So work with your healthcare team to find the dose that gives you good blood sugar control.


Prescription LANTUS® is a long-acting insulin used to treat adults with type 2 diabetes and adults and children (6 years and older) with type 1 diabetes for the control of high blood sugar. It should be taken once a day at the same time each day to lower blood glucose.

Do not use LANTUS® to treat diabetic ketoacidosis.

Important Safety Information for Lantus®

Do not take Lantus® if you are allergic to insulin or any of the inactive ingredients in Lantus®.

You must test your blood sugar levels while using insulin, such as Lantus®. Do not make any changes to your dose or type of insulin without talking to your healthcare provider. Any change of insulin should be made cautiously and only under medical supervision.

Please click here for additional Important Safety Information.

Please click here for Full Prescribing Information.



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LANTUS® SoloSTAR® Pen Video

Watch this video to learn more about the LANTUS® SoloSTAR® Pen.

LANTUS® Injection Video

Learn how to inject LANTUS® with this easy-to-follow injection video.

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The free GoMeals® iPhone, iPod Touch, iPad and Android application makes it easy to access nutritional information, find restaurants and keep track of your food intake.

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Important Safety Information for Lantus®

Do not take Lantus® if you are allergic to insulin or any of the inactive ingredients in Lantus®.

You must test your blood sugar levels while using insulin, such as Lantus®. Do not make any changes to your dose or type of insulin without talking to your healthcare provider. Any change of insulin should be made cautiously and only under medical supervision.

Do NOT dilute or mix Lantus® with any other insulin or solution. It will not work as intended and you may lose blood sugar control, which could be serious. Lantus® must only be used if the solution is clear and colorless with no particles visible. Do not share needles, insulin pens or syringes with others.

The most common side effect of insulin, including Lantus®, is low blood sugar (hypoglycemia), which may be serious. Some people may experience symptoms such as shaking, sweating, fast heartbeat, and blurred vision. Severe hypoglycemia may be serious and life threatening. It may cause harm to your heart or brain. Other possible side effects may include injection site reactions, including changes in fat tissue at the injection site, and allergic reactions, including itching and rash. In rare cases, some allergic reactions may be life threatening.

Tell your doctor about other medicines and supplements you are taking because they can change the way insulin works. Before starting Lantus®, tell your doctor about all your medical conditions including if you have liver or kidney problems, are pregnant or planning to become pregnant, or are breast-feeding or planning to breast-feed.

Lantus® SoloSTAR® is a disposable prefilled insulin pen. Please talk to your healthcare provider about proper injection technique and follow instructions in the Instruction Leaflet that accompanies the pen.

Click here for full prescribing information for Lantus®.

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The health information contained herein is provided for general educational purposes only. Your healthcare professional is the single best source of information regarding your health. Please consult your healthcare professional if you have any questions about your health or treatment.