Insulin for Pets

Insulin is most commonly prescribed to manage diabetes mellitus in pets. In dogs, diabetes typically requires lifelong insulin therapy. In cats, insulin is also a common treatment and may be used alongside diet and close monitoring. Insulin works by helping glucose move from the bloodstream into body tissues, which lowers blood sugar and helps control signs such as increased thirst, increased urination, weight loss, weakness, and increased appetite. Different insulin products vary in how quickly they start working and how long they last, so your veterinarian will choose the product and schedule that best fits your pet.

Always follow your vet's instructions exactly. Never change the dose, timing, insulin type, syringe type, or feeding routine unless your veterinarian tells you to. Insulin is typically given by injection under the skin, and consistency matters: give it on the schedule your vet prescribes and pair it with the feeding plan they recommend. If your pet does not eat normally, contact your veterinarian for guidance before giving insulin. Do not give a double dose if one is missed. Use a written log so doses are not accidentally repeated, and store and handle the insulin exactly as directed on the label. Regular monitoring with your veterinary team is important, and may include glucose curves, spot glucose checks, fructosamine testing, ketone monitoring, weight checks, and tracking thirst, appetite, and urination at home.