PROZINC offers reliable, lasting results.

PROZINC is a protamine zinc insulin -- ideal for diabetic cats -- with a convenient duration of 10-14 hours.1 It releases slowly to help maintain a consistent blood glucose level throughout the day, when administered every 12 hours.

It's formulated just for cats.

Backed by extensive clinical studies, PROZINC is specifically designed for feline diabetes and is the first protamine zinc insulin with FDA approval for diabetic cats.

PROZINC makes treatment simple.

Just two daily doses deliver quick and effective results regardless of the diet the cat is fed.2 Plus, PROZINC is for newly diabetic cats and cats who haven't responded well to other treatments and insulin products.2

User safety information: For use in cats only. Keep out of the reach of children.

It's proven safe for cats.

It's proven safe and effective for the reduction of hyperglycemia (high blood glucose) and clinical signs associated with hyperglycemia in cats with diabetes. The safety and efficacy of ProZinc in kittens and in breeding, pregnant, or lactacting cats has not been evaluated.3,4

Important safety information

  • PROZINC insulin, like other insulin products, is not free from adverse reactions. The most common reaction observed is hypoglycemia. 
  • The safety and effectiveness of PROZINC insulin in kittens and in breeding, pregnant and lactating cats has not been evaluated.

What is PROZINC Insulin?

PROZINC insulin is an aqueous protamine zinc suspension of recombinant human insulin that is used to reduce hyperglycemia (high blood glucose or high blood sugar) in cats with diabetes mellitus. A licensed veterinarian must prescribe PROZINC insulin. PROZINC insulin should be given to cats only. Keep out of reach of children.


When it comes to treating diabetic cats, not all insulin products are created equal. For your feline diabetes patients, choose PROZINC, the only protamine zinc insulin that:

  • Is FDA-approved for cats
  • Offers education and tools specific to pet owners
  • Supports your practice and the veterinary industry

Important safety information

The use of any insulin when regulating a diabetic cat may be associated with side effects. The most common side effect reported in field studies was hypoglycemia. This is usually mild (lethargy, weak,trembling, uncoordinated, groggy, dazed), but may be serious and life-threatening (seizures, coma). If side effects occur, cat owners should contact their veterinarian immediately. Hypoglycemia can be fatal if an affected cat does not receive prompt treatment. Please refer to the package insert for complete product information.

Product Resources

How stable is ProZinc®?

PROZINC is a robust and stable insulin, having undergone thorough stability testing:

  • PROZINC has a 2-year shelf life from date of manufacture5
  • PROZINC remains stable even if left at room temperature for short periods of time5 such as may occur during normal use
  • For additional information regarding product stability and supporting studies, please contact Boehringer Ingelheim Vetmedica, Inc. Veterinary Technical Support: 1-866-638-2226
It is recommended to store PROZINC in an upright position under refrigeration at36º- 46º F (2º-8º C). Do not freeze. Protect from light.

The stability and long shelf life of PROZINC make it a cost-effective solution for your clients, and a product you can recommend with confidence and peace of mind.

How is ProZinc good for my practice?

When you choose PROZINC, you’ll appreciate the benefits for your practiceand unmatched product support from Boehringer Ingelheim Vetmedica, Inc.(BIVI), the leader in feline insulin therapy.

  • Veterinary-approved PROZINC drives business to your clinic instead of a human pharmacy
  • PROZINC Diabetes Care Kits allow you to offer your clients the convenience of a one-stop shop for feline diabetes supplies
  • Pet owner education materials and tools deliver value to your practice and convenience for your clients


1. Nelson RW. Disorders of the endocrine pancreas. In: Nelson RW, Couto CG, eds. Small Animal Internal Medicine, 4th ed. St. Louis, MO: Mosby Elsevier; 2009:764-802.
2. Nelson RW, Henley K, Cole C, et al. Field safety and efficacy of protamine zinc recombinant human insulin for the treatment of diabetes mellitus in cats. J Vet Intern Med. 2009;23:787-793.
3. FOI for NADA. 141-297. (PROZINC)
4. Product Insert
5. Data on File