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FAQs

Get the answers to frequently asked questions about LANTUS®.

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These Frequently Asked Questions (FAQs) were developed by sanofi-aventis to give you more information about LANTUS® (insulin glargine [rDNA] injection) and the recent studies published in Diabetologia. Patients who take LANTUS® and have other questions or concerns should talk to their treating healthcare providers.

Is LANTUS® safe?

Should I stop taking LANTUS®?

Should doctors stop prescribing LANTUS®?

Will LANTUS® be taken off the market?

What is sanofi-aventis' response to the recent studies published in Diabetologia?

What actions are sanofi-aventis taking in response to the studies?

Is sanofi-aventis talking with the regulatory agencies? Can the company give me an update on those conversations?

Why were the recent studies conducted by third parties and not sanofi-aventis?

How do the recent studies compare with the randomized controlled studies done by sanofi-aventis?

Has sanofi-aventis studied a link between LANTUS® and the risk of cancer?

Will patients who have been on LANTUS® for several years develop cancer?

Are LANTUS® patients with a past history or family history of cancer at increased risk of developing cancer?

What are the options available to LANTUS® patients who want to switch to another medication?

Where is LANTUS® made? Is sanofi-aventis going to change their production system as a result of the recent concerns about LANTUS®?

Is it true that Novo Nordisk sold LANTUS® to sanofi-aventis?

Where can I find more information?

Is LANTUS® safe?
Sanofi-aventis considers LANTUS® a safe and effective way to help lower blood sugar as part of an overall diabetes treatment plan. The most reliable scientific tests show no link between taking LANTUS® and developing cancer. Sanofi-aventis stands behind the safety of LANTUS®.

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Should I stop taking LANTUS®?
The U.S. Food and Drug Administration (FDA), the American Diabetes Association (ADA), the European Medicines Agency (EMEA), and the International Diabetes Federation (IDF) have all said that the studies recently described in Diabetologia are not clear. They also are calling for caution in interpreting the results and advising patients to continue with their insulin treatment and talk to their treating healthcare providers.

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Should doctors stop prescribing LANTUS®?
Based on current data, sanofi-aventis believes that the benefits and risks of prescribing LANTUS® have not changed. Sanofi-aventis still considers LANTUS® a safe and effective way to help lower blood sugar as part of an overall diabetes treatment plan.

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Will LANTUS® be taken off the market?
Based on the information we have now, there are no plans to take LANTUS® off the market, and the leading health authorities worldwide have not recommended doing so.

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What is sanofi-aventis' response to the recent studies published in Diabetologia?
We believe that the articles published in Diabetologia show that no definitive conclusions can be drawn about a possible link between LANTUS® use and cancer, as the authors of the studies themselves point out. Sanofi-aventis considers LANTUS® a safe and effective way to help lower blood sugar as part of an overall diabetes treatment plan.

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What actions are sanofi-aventis taking in response to the studies?
Patient safety has been and always will be our first concern at sanofi-aventis. We take the issues raised in the recent studies very seriously. We are committed to working with health authorities, professional groups, patient associations, and scientific experts around the world to thoroughly evaluate the recent studies.

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Is sanofi-aventis talking with the regulatory agencies? Can the company give me an update on those conversations?
Sanofi-aventis contacted the Health Authorities when it found out about these publications and their potential impact on public health. All of our data and research were sent to the leading Health Authorities. As part of our commitment to patient safety, we regularly work with these agencies to make sure patients have the most up-to-date safety, benefit, and risk information about all of our products, including LANTUS®.

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Why were the recent studies conducted by third parties and not sanofi-aventis?
Based on the results of our research, sanofi-aventis has never had any reason to suspect a link between LANTUS® and cancer. Our own five-year follow-up study with LANTUS® did not find an increased risk of cancer. No cancer risk has been identified with LANTUS® throughout its development, so we never found cause to conduct research about a possible link.

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How do the recent studies compare with the randomized controlled studies done by sanofi-aventis?
The studies published in Diabetologia used a disease registry, which are observational in nature. They did not require patient consent. The results are less rigorous than the gold standard of randomized controlled studies.

Randomized controlled studies are designed to provide precise answers to specific medical questions. They require prior patient consent. These studies are used to evaluate the efficacy and safety of a drug. They evaluate the relative benefits and risks associated with the drug in a controlled environment.

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Has sanofi-aventis studied a link between LANTUS® and the risk of cancer?
No link between LANTUS® and cancer has been identified in clinical trials or nine years of safety data and the sanofi-aventis five-year follow-up study with LANTUS® did not find an increased risk of cancer.

LANTUS® has been widely studied and no randomized, controlled data appear to show an increased risk of cancer in LANTUS® users.

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Will patients who have been on LANTUS® for several years develop cancer?
We believe that the data published in Diabetologia show no definitive link between LANTUS® use and the development of cancer, as the authors of the studies themselves point out.

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Are LANTUS® patients with a past history or family history of cancer at increased risk of developing cancer?
We believe that the data published in Diabetologia show no definitive link between LANTUS® use and the development of cancer, as the authors of the studies themselves point out.

No link between LANTUS® and cancer has been identified in clinical trials or nine years of safety data, and the Sanofi-aventis five-year follow-up study with LANTUS® did not find an increased risk of cancer.

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What are the options available to LANTUS® patients who want to switch to another medication?
If you are a LANTUS® patient, you should speak with your treating healthcare provider if you have questions regarding your treatment with LANTUS®. Sanofi-aventis considers LANTUS® a safe and effective way to help lower blood sugar as part of an overall diabetes treatment plan.

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Where is LANTUS® made? Is sanofi-aventis going to change their production system as a result of the recent concerns about LANTUS®?
LANTUS® is manufactured in Germany by sanofi-aventis. We currently have no plans to change our production of LANTUS®.

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Is it true that Novo Nordisk sold LANTUS® to sanofi-aventis?
No, LANTUS® is the result of the research carried out within the sanofi-aventis Group.

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Where can I find more information?
You should speak with your treating healthcare provider if you have questions or concerns. Also, check back with us at factsaboutlantus.com for the most up-to-date information about LANTUS®. The following associations are good sources of information about the treatment of diabetes:

Food and Drug Administration

American Diabetes Association

American Association of Clinical Endocrinologists

European Medicines Agency

International Diabetes Federation

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Important Safety Information for Lantus® (insulin glargine [rDNA origin] injection)

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.

Indications and Usage for Lantus®

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.

Click here for additional important information for Lantus®.

Important Safety Information for Apidra® (insulin glulisine [rDNA origin] injection)

Do not use Apidra® during a low blood sugar reaction (hypoglycemia) or if you are allergic to any of the ingredients in Apidra®.

You must test your blood sugar levels while using insulin, such as Apidra®. 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. Apidra® 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.

Apidra®, when given by injection under the skin, should not be mixed with insulins other than NPH. Do not mix Apidra® with any insulin when used in the pump or for intravenous administration.

The most common side effect of insulin, including Apidra®, 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 low blood potassium, injection site reactions, such as changes in fat tissue at the injection site, and allergic reactions, such as itching and rash. Less common, but potentially more serious or life-threatening, is generalized allergy to insulin, including anaphylactic reactions.

Tell your doctor about other medicines and supplements you are taking because they can change the way insulin works. Before starting Apidra®, 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.

Indications and Usage for Apidra®

Prescription Apidra® is a rapid-acting insulin for adults with type 2 diabetes or adults and children (4 years and older) with type 1 diabetes to improve blood sugar control. Apidra® given by subcutaneous injection is usually used with a longer-acting insulin. When used as a mealtime insulin, Apidra® should be given within 15 minutes before or within 20 minutes after starting a meal.

Click here for additional important information for Apidra®.



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.

Additional Resources

FDA States that Study Limitations Prevent Attribution of Observed Cancer Risk to LANTUS®

On January 12, 2011, the U.S. Food and Drug Administration (FDA) issued an update to their July 2009 Early Communication About Safety of LANTUS® (insulin glargine). According to the statement, the FDA reviewed four observational studies that suggested a possible link between insulin use and cancer and has determined that the evidence presented in the studies is inconclusive, due to limitations in how the studies were designed and carried out and in the data available for analysis. The FDA stated that these limitations prevent their ability to attribute the observed cancer risk to LANTUS®.

Diabetes and Cancer: a consensus report

A consensus report, from experts who were assembled by the American Diabetes Association and the American Cancer Society, reviewed emerging evidence that suggest association between cancer incidence and diabetes, as well as certain diabetes risk factors and treatments.

Food and Drug Administration

Based on the currently available data, the FDA recommends that patients should not stop taking their insulin therapy without consulting a physician, since uncontrolled blood sugar levels can have both immediate and long-term serious adverse effects.

Pharmaceutical and Medical Devices Agency, Japan

On the basis of currently available data regarding an increased risk of cancer associated with insulin glargine, the PMDA has concluded that no additional safety measures are needed.

American Diabetes Association

Possible Link Between Insulin Glargine and Cancer-Research Conflicting and Inconclusive; Patients Should Not Stop Using Insulin and Should Talk to Their Doctor.

International Diabetes Federation

It is important that people needing insulin do not stop taking the drug. IDF cautioned that people with diabetes should see their doctor for advice before considering any change to their treatment.

American Association of Clinical Endocrinologists

On June 26, 2009 several articles published online in Diabetologia by the European Association for the Study of Diabetes investigated the possible relationship between use of insulin glargine (LANTUS®, sanofi-aventis U.S.) and the development of certain malignancies.

The Endocrine Society

Five articles recently published online in the medical journal Diabetologia studied the possible connection between the use of insulin glargine (LANTUS®) and the development of cancer. While one of these studies suggested an increased risk of cancer, the other four did not come to the same conclusion.

From Diabetologia

Combined randomised controlled trial experience of malignancies in studies using insulin glargine. Further investigation of the possible relationship between insulin glargine and increased levels of cancer/breast cancer concluded that insulin glargine was not associated with an increased incidence of cancer compared with the comparator group.