Sanofi Diabetes

Types of Insulin

Different insulins are designed to meet different needs

Basal Insulin

The term basal insulin refers to the slow steady release of insulin that controls your blood sugar when no food is being digested.

This can include long and intermediate acting insulins which:

  • Start working at different points in time after injection
  • Last for different lengths of time

You and your doctor can decide which type of insulin may work best for you based on your individual needs.

Mealtime Insulin

Mealtime insulin may be taken before, during, or after a meal, depending on the insulin you use. This kind of insulin controls blood sugar levels associated with meals.

This can include short and rapid acting insulins which:

  • Start working at different points in time after injection
  • Last for different lengths of time

You and your doctor can decide which type of insulin may work best for you based on your individual needs.

Your doctor will help decide which insulin(s) is right for you. However, one thing is true of all kinds of insulin. Regardless of which kind you need, it can play an important role in your diabetes treatment program. 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.


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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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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.