Lantus® FAQs

Helpful questions and answers when considering insulin

Prescription Lantus® is a long-acting insulin used to treat adults with type 2 diabetes and adults and pediatric patients (children 6 years and older) with type 1 diabetes for the control of high blood sugar.

  • Do not use Lantus® to treat diabetic ketoacidosis.
Lantus® is administered "subcutaneously," or under the skin. There are two ways you can administer Lantus®: with the Lantus® SoloSTAR® pen or with a vial and syringe.
Weight gain can occur with any insulin therapy, including Lantus®. Following a healthy diet and exercise program can help with weight control.
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 swelling, weight gain, administration site reactions, including changes in fat tissue at the administration site, and allergic reactions, including itching and rash. In rare cases, some allergic reactions may be life-threatening. Other people may not experience symptoms of hypoglycemia. It is, therefore, important to monitor your blood sugar levels regularly. For a full description of potential side effects please refer to the full prescribing information for Lantus®.
No. Do not 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® is often taken in combination with other diabetes medicines and/or mealtime insulin. Usually, good blood sugar management takes careful planning of your meals and snacks, a regular physical activity plan, reducing stress where possible, and taking all your diabetes medicines as directed.

Sign up for your Sanofi Rx Savings Card PAY $10* CO-PAYper Lantus® prescription for 12 months

*Certain restrictions apply. See Savings Card for details when you enroll.

See the features of theSoloSTAR® pen
Prefilled with the #1 Prescribed Insulin*

*Based on TRx data from IMS Health, NPATM monthly database, time period from May 2003 to September 2016.

Utilize the Lantus®Doctor Discussion/ Q&A Guideto talk with your doctor about reasons your
blood sugar levels can change