Lantus Insulin U-100, slide 1 of 1

Lantus Insulin U-100, 10-mL

Prescription Item

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Lantus “glargine” insulin is known as a "peakless" insulin, in that it is released slowly and at a constant rate. Abnormal peaks and valleys in blood sugar levels offers poor diabetic control. Lantus maintains steadier blood sugar levels which means less testing and less pain for you and your pet.

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Insulin is used for the treatment of diabetes mellitus. Regular insulin is commonly used for stabilization of the diabetic pet and is the only formulation labeled for intravenous administration (IV); it is also administered by intramuscular (IM) and subcutaneous (SC) injection.

Possible Side Effects

Adverse reactions commonly associated with Lantus include hypoglycemia, allergic reactions, injection site reactions, lipodystrophy, pruritus, rash, edema and weight gain.

Drug & Food Interactions

Notify your veterinarian of any other medications, including vitamins and supplements, your pet is taking while receiving insulin.


Do not inject insulin at the same site day after day or lipodystrophic reactions can occur. Do not change the pet's food, feeding schedule, or exercise schedule once regulated for that food and schedule. Do not use any insulin that has been frozen or exposed to direct heat or light. Make sure you are always using the appropriate type of syringe for the type of insulin you have.

This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs and cats.

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  1. Prescribing Information

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  • Item Number
  • Generic Name
    Insulin Glargine.
  • For Use With
    Dogs & Cats
  • Common Brand Name(s)
  • Administration Form
  • Product Form
  • Health Condition
  • Drug Type

Insulin Glargine.

Recommended Dosage

Individualize dosage based on metabolic needs, blood glucose monitoring, glycemic control, type of diabetes prior insulin use. Administer subcutaneously once daily at any time of day, but at the same time every day. Do not dilute or mix with any other insulin or solution. Rotate injection sites to reduce the risk of lipodystrophy. Closely monitor glucose when changing to Lantus and during initial weeks thereafter.

Storage Instructions

Store unused Lantus vials in the refrigerator between 36°F to 46°F (2°C to 8°C). Store in-use (opened) Lantus vials in a refrigerator or at room temperature below 86°F (30°C). Do not freeze Lantus. Keep Lantus out of direct heat and light. If a vial has been frozen or overheated, throw it away. The Lantus vials you are using should be thrown away after 28 days, even if it still has insulin left in it.


What is Lantus (insulin glargine injection) 100 Units/mL?

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.

Why Lantus?

  • Proven to lower A1C

  • Once daily

  • Easy to store

Rating: 5.0 of 5 stars 2 Reviews 2 Reviews 5 out of 5 Stars

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  • 5 out of 5 stars

    What a relief

    By Doug on Aug 5, 2019

    This product is the one that has finally brought our cat back into good health and I'm so relieved that Chewy is now carrying it, because I trust them more than other vendors.

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  • 5 out of 5 stars

    The Apostle Floyd

    By Floyd on Sep 26, 2019

    I haven’t ordered this from Chewy yet but I have used this for about a year. Very good price!

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