Vetsulin® For Cats

Vestulin Product

Manage diabetes and enjoy life with your cat

Vetsulin® (porcine insulin zinc suspension) is an injectable insulin suspension that reduces hyperglycemia (high blood sugar) in cats with diabetes mellitus.

Vetsulin is an insulin designed to work specifically for your cat. It is FDA approved, starts working quickly, and is long-lasting.

  • Controls glucose levels
  • Lessens signs of diabetes
  • FDA-approved for cats
  • U-40 insulin syringe or VetPen®
  • Used for over 25 years worldwide*
  • Unlike other insulin products, Vetsulin is shaken to mix properly

*Vetsulin is sold as Caninsulin® outside the United States.

"I thought life with diabetes was going to be miserable, but my family helped me manage it with Vetsulin. Now I'm back to doing my nails and taking cat naps.” "


How to Give Vetsulin® Using a U-40 Insulin Syringe

Important dosage information

Doses of insulin are measured in units: 40 IU/mL insulin contains 40 International Units (IU) per milliliter (mL) (1 mL = 1 cc).

Use Vetsulin with U-40 syringes only

These syringes are designed specifically for use in animals. Using a syringe other than a U-40 syringe (such as a U-100 syringe that is designed for use in people) will result in incorrect dosing. This could be dangerous for your cat.

Your veterinarian will prescribe Vetsulin for your cat

Follow your veterinarian's instructions to properly give Vetsulin to your cat. Your veterinarian will:

  • Determine the amount of insulin and frequency needed
  • Advise on proper storage and handling
  • Show how to draw the insulin from the vial
  • Instruct on how to give the injection

When you feel comfortable, your veterinarian and veterinary nurse will give you everything you need to care for your cat's diabetes at home.

Preparing the dose

After washing your hands, take the Vetsulin (porcine insulin zinc suspension) vial out of the refrigerator. Shake the vial until the insulin is uniformly milky, allowing any foam to disperse.

  1. Carefully remove the cap from the needle and insert the needle into the vial.
  2. Turn the vial upside down, making sure the tip of the needle remains in the vial.
  3. Withdraw the correct dose into the U-40 syringe.
  4. Before removing the needle from the vial, check the syringe for any air bubbles.
  5. If bubbles are present, hold the syringe up and tap its side until the bubbles float to the top. Push them out with the plunger and withdraw the correct dose.
  6. Remove the needle from the vial. Be careful that you do not inject yourself.

Giving the injection

Pinch a fold of your cat's skin
Gently insert needle in center of fold of skin, 1–2" from middle of back
Push plunger as far as it will go, pull needle out, and dispose of syringe appropriately

Giving injections may seem daunting–but with practice, it can be easy and fit into your daily routine.

  1. Injection should be given under the skin, 3/4 to 2 inches from the middle of your cat's back, varying from behind the shoulder blades to the middle of the back region and alternating sides.
  2. Gently insert needle in center of folded skin.
  3. Push plunger until all of the insulin is given.
  4. Pull needle out and dispose of syringe into appropriate sharps collector.

Injection Tips:

  • Injection point can depend upon your veterinarian's recommendation and what is best for you and your cat.
  • Alternate injection site between left and right side for comfort and best results. Repeat injections at the same site can lead to ineffective treatment.

Downloadable Vetsulin administration instructions

All the details you need about preparing and giving a dose to your cat.

Find more information, FAQs and troubleshooting for Vetsulin. Read Now

Important Safety Information

Vetsulin® should not be used in cats known to have a systemic allergy to pork or pork products. Vetsulin is contraindicated during periods of hypoglycemia. Keep out of reach of children. As with all insulin products, careful patient monitoring for hypoglycemia and hyperglycemia is essential to attain and maintain adequate glycemic control and prevent associated complications. Overdosage can result in profound hypoglycemia and death. The safety and effectiveness of Vetsulin in kittens, breeding, pregnant, and lactating cats has not been evaluated.

See package insert for full information regarding contraindications, warnings, and precautions.

User Safety Warning

For use in animals only. Keep out of the reach of children. Avoid contact with eyes. In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes. Accidental injection may cause clinical hypoglycemia. In case of accidental injection, seek medical attention immediately. Exposure to the product may induce a local or systemic allergic reaction in sensitized individuals.

Talk to Your Vet Today

Find a veterinarian to learn more about pet diabetes, and how cats and dogs can lead a happy, healthy life with proper management.

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