💊 Med cost guide
How much does ProZinc cost?
ProZinc (protamine zinc recombinant human insulin (U-40)) is an insulin from Boehringer Ingelheim, used for diabetes mellitus (flagship feline insulin; also labeled for dogs). Here's what it actually costs in the US — and how to pay less.
Typical monthly cost
$65–$265 / month
Cats on small doses (1-3 units twice daily) often get 6-10+ weeks from a vial (~$65-$135/month); dogs on larger doses burn vials faster. Add U-40 syringes.
What you'll pay
| Typical price | Unit |
|---|---|
| $131.69–$160 | per 10 mL vial |
Chewy Rx lists the 10 mL vial at $131.69; vet-office retail typically higher.
Label dosing (for cost context, not a recommendation): Typically once or twice daily injection per the public label; dose individualized by the vet.
Why it costs what it does
ProZinc comes as: 10 mL U-40 injectable vial, owner-administered at home. A few things set the price:
- This one is already near the price floor for its category — generic competition keeps it cheap, and the bigger recurring line item is usually the monitoring visits, not the medication itself.
Cheaper alternatives to ask your vet about
Vetsulin is cheaper per vial; for cats some vets discuss human glargine biosimilars filled with a coupon at a human pharmacy, or oral bexagliflozin for eligible newly diagnosed cats.
Never switch, split, or stop a prescription on your own — bring these options up at your next visit and let your vet make the call for your pet.
Before you fill
Price-check before you buy
The same prescription can vary 2–3× between the vet's shelf, online pet pharmacies, and retail. A written prescription is yours to fill anywhere — vets are required to provide one on request.
Disclosure: Meow Howl may earn a commission if you buy through links on this page, at no extra cost to you. Commissions never influence our pricing research.
Help paying for ProZinc
- Costco Member Prescription Program (CMPP) — Worth a price check on any expensive monthly med if you already hold a membership.
- The Pet Fund — The right fit for chronic-condition medication costs; wrong fit for emergencies.
Sources & price verification
- Chewy Rx — $131.69 per 10 mL vial (accessed 2026-06-11)
- GoodRx — coupon pricing availability (accessed 2026-06-11)
How we verify these prices
Prices aggregated 2026-06-11 from public retailer listings (Chewy Rx, Petco, Heartland Vet Supply, EntirelyPets Rx, BudgetPetCare, PetBucket), GoodRx coupon pages, manufacturer pages, and 2026 vet-cost guides. Vet-administered injectables (Librela, Solensia, Cytopoint, Adequan loading) use published clinic-price surveys because the drug is not sold direct to consumers. Ranges are medication-only unless noted; exam/administration fees are flagged separately. Prices move — re-verify before publishing figures on a page, and show the per-item verified date.
Last verified: June 11, 2026 · Region: US · Currency: USD
