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Vetsulin® (porcine insulin zinc suspension) 10ml Insulin for Cats & Dogs


SKU: 04685 Manufacturer: Merck

Manage diabetes and enjoy life withyour dog

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

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

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

    UPCO ships cold items as soon as possible, but ONLY ships temperature sensitive items Monday-Thursday when delivery dates for your selected location fall during the same week it is shipped even if expedited service is selected. EX: If you choose overnight delivery for an order placed on Friday, it will ship on Monday for Tuesday delivery. This avoids weekend transit where items will sit in unknown temperature conditions until the following week. If you need a cooler item expedited and delivered by a specific date, please contact our customer service department at 816-233-8800 for further assistance.

  • Expedited Shipping Required

  • (May – September)
  • Due to rising temperatures during the warmer months of the year, expedited shipping will be required for all perishable products purchased and shipped from UPCO. Requiring air shipping service helps ensure product stability upon receipt and minimizes duration of heat exposure.


20 in stock

  • Total


Vetsulin® is a pharmacy item that requires a veterinarian prescription. No prescriptions can be shipped to Virginia.


How to Use

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.

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