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Lantus Insulin FAQ

Lantus insulin treats both Type 1 and Type 2 diabetes. The insulin is delivered by pen injection. The pen injector is reusable. The needles and insulin cartridges must be disposed of after use. Lantus insulin is indicated for people who need a long-acting insulin to control high blood sugar levels.

  1. How Do You Use Lantus Insulin?

    • The Lantus pen injects insulin under your skin. Inject yourself in a different location each time. Attach a new needle before use. Before using the pen, check the insulin to make sure it is clear. Do not inject the insulin if it is cloudy or colored. Dial your correct dosage on the pen and select the injection site. Choose a spot on your upper arm, thigh or abdomen. Swab the area with alcohol. Lightly pinch your skin with one hand and use your other hand to insert the needle into the pinched skin. Press the injection button to deliver the insulin and keep the button depressed for 10 seconds. Withdraw the needle; remove it from the pen and dispose of it in a properly labeled puncture-proof container. The Mayo Clinic website recommends you take Lantus insulin daily at bedtime.

    How Do You Select the Proper Dose?

    • Rotate the dosage dial on the end of the Lantus pen. You can select a dose of 1 to 80 units of insulin. If you cannot get the dial to go as high as your dose requires, check to make sure you have enough insulin left in the pen. Turn the dial to your prescribed dose and verify that you see the correct number of units in the small window at the end of the Lantus pen.

    How Long Does a Lantus Pen Last?

    • According to drugs.com, the Lantus insulin pen is to be used for up to 28 days. Each pen contains 300 units of insulin. If your pen still has insulin in it after 28 days, throw it away.

    How Do You Store a Lantus Pen?

    • Store unopened pens in your refrigerator. Do not allow them to freeze. According to the Lantus official website, once you have opened a pen, it does not need to be refrigerated. Do not let your pen get too warm. Store it in a room under 86 degrees F. Do not leave your pen in a closed car or let sunlight fall on it.

    Can a Needle Be Used More Than Once?

    • No, use a new needle each time you use the Lantus pen. Reusing the same needle can cause infection, contamination and functional problems with the pen. Do not share your Lantus pen with anyone else as this carries the risk of spreading HIV or hepatitis.

    Does the Lantus Insulin Pen Have Any Side Effects?

    • You might have a reaction at the injection site. This includes itching, rash, allergic reaction and changes to your fat tissue. All forms of insulin carry the risk of causing blood sugar levels to drop too low. Be alert for symptoms of hypoglycemia like blurred vision, nausea, sweating, tremor, weakness and fast heart rate. Drugs.com recommends you carry glucose tablets or hard candy with you at all times in case your blood sugar drops.

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