Caninsulin VetPen
Caninsulin VetPen is a veterinary-formulated porcine insulin zinc suspension offered in a pen format that simplifies dosing for dogs and reduces wastage compared with vial-only products. It is positioned as a cost-conscious, clinic-friendly option with dosing pens that improve owner compliance versus vial-based insulins like Prozinc, while providing a more veterinary-focused formulation than human products such as Lantus or Humulin N.
Prefilled pen
Vet-formulated
Prefilled pen
Vet-formulated
Review Summary
"Owners frequently praise Caninsulin VetPen for easy dosing and generally reliable glycemic control in dogs, though some report occasional supply issues or variability between batches. The pen format and veterinary focus are cited as major advantages for long‑term use."
Tail-approved ease
Porcine zinc insulin formulated specifically for dogs and licensed for veterinary use.
Tail-approved ease
Porcine zinc insulin formulated specifically for dogs and licensed for veterinary use.
Increased Safety & Security
Time-Saving Convenience
Skill Development & Mastery
Caninsulin VetPen is a veterinary-formulated porcine insulin zinc suspension offered in a pen format that simplifies dosing for dogs and reduces wastage compared with vial-only products. It is positioned as a cost-conscious, clinic-friendly option with dosing pens that improve owner compliance versus vial-based insulins like Prozinc, while providing a more veterinary-focused formulation than human products such as Lantus or Humulin N.
Prefilled pen
Vet-formulated
Tail-approved ease
Porcine zinc insulin formulated specifically for dogs and licensed for veterinary use.
Available as a prefilled VetPen option for more precise dosing and easier owner administration.
Prefilled pen
Vet-formulated
Tail-approved ease
Porcine zinc insulin formulated specifically for dogs and licensed for veterinary use.
Available as a prefilled VetPen option for more precise dosing and easier owner administration.
$150-260 USD
Vetsulin
Vetsulin is a well-established porcine insulin zinc suspension widely used in canine diabetes management and valued for its predictable intermediate-acting profile and extensive clinical history. As a market leader it combines broad availability and clinician familiarity—advantages over newer veterinary-specific insulins like Prozinc—and while it can be pricier than human NPH alternatives, many vets prefer it for its canine-focused labeling and dosing guidance.
Canine-specific formula
Vial dosing option
Canine-specific formula
Vial dosing option
Review Summary
"Vetsulin is widely regarded as effective and affordable for many diabetic dogs, with many users achieving good control after proper dosing and mixing; critiques focus on the need for careful resuspension and occasional inconsistency between vials. Long‑term users appreciate its veterinary formulation and cost profile."
Puppy-wag worthy
Porcine insulin zinc suspension with a long history of use and evidence in canine diabetes care.
Puppy-wag worthy
Porcine insulin zinc suspension with a long history of use and evidence in canine diabetes care.
Increased Safety & Security
Skill Development & Mastery
Vetsulin is a well-established porcine insulin zinc suspension widely used in canine diabetes management and valued for its predictable intermediate-acting profile and extensive clinical history. As a market leader it combines broad availability and clinician familiarity—advantages over newer veterinary-specific insulins like Prozinc—and while it can be pricier than human NPH alternatives, many vets prefer it for its canine-focused labeling and dosing guidance.
Canine-specific formula
Vial dosing option
Puppy-wag worthy
Porcine insulin zinc suspension with a long history of use and evidence in canine diabetes care.
Intermediate-acting profile typically administered twice daily with meals for stable glycemic control.
Canine-specific formula
Vial dosing option
Puppy-wag worthy
Porcine insulin zinc suspension with a long history of use and evidence in canine diabetes care.
Intermediate-acting profile typically administered twice daily with meals for stable glycemic control.
$90-170 USD
Prozinc
Prozinc is a veterinary protamine zinc insulin (PZI) developed for cats and dogs that offers a steadier basal action and lower day-to-day variability, which can translate into fewer hypoglycemic events when compared to some intermediate insulins. Technically aimed at tighter long-term glycemic control, Prozinc may carry a higher per-unit cost than legacy products like Vetsulin or Humulin N but can reduce overall clinic visits and dose adjustments in dogs requiring stable basal coverage.
Long-acting profile
Stable glucose control
Long-acting profile
Stable glucose control
Review Summary
"ProZinc receives mixed feedback for canine use — some dogs respond well, but a substantial number of owners report inconsistent control or need to switch insulins. It is often viewed as better suited to cats, with dog users reporting more variable outcomes over time."
Paw-friendly schedule
Protamine zinc insulin (PZI) formulated for veterinary use and occasionally used off-label in dogs.
Paw-friendly schedule
Protamine zinc insulin (PZI) formulated for veterinary use and occasionally used off-label in dogs.
Increased Safety & Security
Skill Development & Mastery
Prozinc is a veterinary protamine zinc insulin (PZI) developed for cats and dogs that offers a steadier basal action and lower day-to-day variability, which can translate into fewer hypoglycemic events when compared to some intermediate insulins. Technically aimed at tighter long-term glycemic control, Prozinc may carry a higher per-unit cost than legacy products like Vetsulin or Humulin N but can reduce overall clinic visits and dose adjustments in dogs requiring stable basal coverage.
Long-acting profile
Stable glucose control
Paw-friendly schedule
Protamine zinc insulin (PZI) formulated for veterinary use and occasionally used off-label in dogs.
Offers a longer duration of action that can suit once- or twice-daily dosing depending on patient response.
Long-acting profile
Stable glucose control
Paw-friendly schedule
Protamine zinc insulin (PZI) formulated for veterinary use and occasionally used off-label in dogs.
Offers a longer duration of action that can suit once- or twice-daily dosing depending on patient response.
$80-150 USD
Lantus
Lantus (insulin glargine) is a long-acting human insulin analogue sometimes used off-label in dogs for its very stable, peakless basal profile that can improve control in difficult or brittle diabetic cases. Although generally more expensive than veterinary-approved insulins and requiring off-label use considerations, its pharmacologic consistency can be a technical advantage over intermediate-acting options such as Vetsulin or Humulin N when aiming for tight glycemic targets.
Ultra-long action
Low peaks
Ultra-long action
Low peaks
Review Summary
"Lantus (insulin glargine) is commonly reported by owners to provide stable, long‑acting control with fewer peaks, and many who use it long‑term are satisfied; drawbacks are higher cost, off‑label use in dogs, and the need for careful titration. Users value its predictability when properly managed."
Nap-time dosing win
Insulin glargine (human long-acting) used off-label in dogs for challenging or brittle diabetes cases.
Nap-time dosing win
Insulin glargine (human long-acting) used off-label in dogs for challenging or brittle diabetes cases.
Increased Safety & Security
Time-Saving Convenience
Skill Development & Mastery
Lantus (insulin glargine) is a long-acting human insulin analogue sometimes used off-label in dogs for its very stable, peakless basal profile that can improve control in difficult or brittle diabetic cases. Although generally more expensive than veterinary-approved insulins and requiring off-label use considerations, its pharmacologic consistency can be a technical advantage over intermediate-acting options such as Vetsulin or Humulin N when aiming for tight glycemic targets.
Ultra-long action
Low peaks
Nap-time dosing win
Insulin glargine (human long-acting) used off-label in dogs for challenging or brittle diabetes cases.
Provides a stable basal insulin level and may be dosed once or twice daily based on veterinary guidance.
Ultra-long action
Low peaks
Nap-time dosing win
Insulin glargine (human long-acting) used off-label in dogs for challenging or brittle diabetes cases.
Provides a stable basal insulin level and may be dosed once or twice daily based on veterinary guidance.
$90-170 USD
Humulin N
Humulin N (NPH) is an intermediate-acting human insulin that is often used as a lower-cost, widely available alternative for dogs; its familiar pharmacology and retail availability make it a practical choice for budget-conscious owners. While less tailored to veterinary patients than products like Caninsulin or Prozinc and showing greater absorption variability in some dogs, its cost-effectiveness and accessibility remain strong financial advantages for long-term management.
Intermediate action
Widely available
Intermediate action
Widely available
Review Summary
"Humulin N is often chosen as a cost‑effective, effective intermediate‑acting option and many owners report good glucose control with consistent dosing, though some find it less tailored to dogs than veterinary insulins and emphasize close monitoring. Reliability is generally reported as good but not universal."
Tail-wag reliable
Human NPH (intermediate-acting) insulin frequently used off-label in dogs as a cost-effective option.
Tail-wag reliable
Human NPH (intermediate-acting) insulin frequently used off-label in dogs as a cost-effective option.
Increased Safety & Security
Time-Saving Convenience
Humulin N (NPH) is an intermediate-acting human insulin that is often used as a lower-cost, widely available alternative for dogs; its familiar pharmacology and retail availability make it a practical choice for budget-conscious owners. While less tailored to veterinary patients than products like Caninsulin or Prozinc and showing greater absorption variability in some dogs, its cost-effectiveness and accessibility remain strong financial advantages for long-term management.
Intermediate action
Widely available
Tail-wag reliable
Human NPH (intermediate-acting) insulin frequently used off-label in dogs as a cost-effective option.
Widely available in vials or pens but requires individualized dosing and veterinary oversight.
Intermediate action
Widely available
Tail-wag reliable
Human NPH (intermediate-acting) insulin frequently used off-label in dogs as a cost-effective option.
Widely available in vials or pens but requires individualized dosing and veterinary oversight.
$50-120 USD