Dosage & Administration

Insulin is a liquid given by injection. Your veterinarian and staff will show you how to properly handle, measure, and give Insulin to your dog or cat. For detailed instructions, see our Patient Information Sheet. Always follow the dosage instructions provided by your veterinarian. If you have difficulty giving the medication, contact your veterinarian. This medication should only be given to the pet for whom it was prescribed. The Lantus vials you are using should be thrown away after 28 days, even if it still has insulin left in it.

Possible side effects of Lantus Insulin U-100

May see hypoglycemia (low blood sugar level) with signs such as weakness, lethargy, shaking, seizures, or coma. Hypoglycemic cats may simply be inactive. May also see hyperglycemia (too much sugar in the blood) where the body increases the blood sugar level. Signs may include increased thirst and urination, vomiting, change in gait, or weakness.

If you miss giving a dose

If you miss a dose by more than two to three hours, contact your veterinarian to determine if you should still give it. If it is almost time for the next dose, skip the one you missed and go back to the regular schedule. Do not give two doses at once.

If you overdose the pet

If you know or suspect your pet has had an overdose, contact your veterinarian immediately.

What should I avoid while giving Lantus Insulin U-100 to my pet

Notify your veterinarian of any other medications, including vitamins and supplements, your pet is taking while your pet is receiving Insulin. Increased risk of low blood sugar may occur if used with anabolic steroids, beta-blockers, monoamine oxidase inhibitors, phenylbutazone, sulfinpyrasone, tetracycline, or salicylates like aspirin. Increased risk of high blood sugar may occur if used with glucocorticoids, thyroid medications, dobutamine, epinephrine, estrogen/ progesterone combinations, or diuretics. Hypoglycemic agents such as glipizide may help lower Insulin requirements, as may chromium picolinate. Use care when starting treatment for thyroid disorders in a diabetic animal, as Insulin needs may change. Changes in potassium levels may occur when using Insulin along with heart medications and/or diuretics.

Who should not take it?

This medication should only be given to the pet for whom it was prescribed. If your pet is not eating, contact your veterinarian before giving Insulin.