Cat laying down wearing HomeAgain collar. Cat laying down wearing HomeAgain collar.

With You
For Life

Manage a life of healthy adventures with Vetsulin® for cats.

FDA Approved,
Two Ways to Administer

The first veterinary insulin approved for both dogs and cats is also the first to offer you a choice in how it’s administered.

Vetsulin® (porcine insulin zinc suspension) For Cats

U-40 Insulin Syringe

  • U-40 Insulin Syringe option is widely used in pets with diabetes
  • Used by veterinarians
VetPen® small


  • First insulin pen designed for pets with diabetes
  • Uses Vetsulin 2.7mL cartridges for dosing
  • Convenient and accurate for all cat and dog parent lifestyles

“Let’s talk about managing diabetes for your cat.”


Cartoon cat with purple collard and heart shaped pendant

Living Well
With Diabetes

While there’s no cure for diabetes, proper care can help your cat live a normal, healthy life. The more you know about diabetes, the better you’ll be able to work with your veterinarian to successfully manage your cat’s health.

Cat wearing HomeAgain collar.
Woman holding cat across her shoulder.

You Have Questions
We Have Answers

The following FAQs can help answer any questions you may have about Vetsulin® and VetPen®. For specific questions, talk to your veterinarian.

Quality of Life
at Your Fingertips

Check out these tools and resources to help manage your cat’s diabetes.

Shaggy dog and striped cat in the park together overlapped with "Pet Diabetes Tracker Mobile App".
Blue and green curve chart depicting a pet's blood glucose curve.
Cat staring at computer.
Golden retriever and cat laying next to each other. Golden retriever and cat laying next to each other.

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.


VETSULIN® and VETPEN® are for use in animals only. Dogs and cats known to have an allergy to pork or pork products should not be treated with VETSULIN®. VETSULIN® is contraindicated during periods of hypoglycemia. Animals with severe ketoacidosis, anorexia, lethargy, and/or vomiting should be stabilized with short-acting insulin and appropriate supportive therapy before use. As with all insulin products, careful patient monitoring for hypoglycemia and hyperglycemia is essential. Overdosage can result in profound hypoglycemia and death. Progestogen and glucocorticoid use should be avoided. The safety and effectiveness of VETSULIN® in puppies, kittens, breeding, pregnant, and lactating dogs and cats has not been evaluated. Keep out of 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. For complete safety information, refer to the product label.