Vetsulin (porcine insulin zinc suspension) is the only FDA-approved veterinary product for the treatment of diabetes mellitus in both dogs and cats. It's prescribed to help control your pet's glucose levels and alleviate the unpleasant symptoms of diabetes. Vetsulin comes in the form of a sterile, injectable porcine insulin zinc solution, and may help your pet to feel better. **Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.**