Also Known as Caninsulin

What if I find a lower price with another pharmacy?

We guarantee the lowest price on all of our prescription products. If you find your medications cheaper at any other recognized licensed mail order pharmacy, we will not only match their price, we will beat it by 25% of the difference. It is our 125% price match guarantee!

Example: If you find a product on Canada Drugs Direct for $50.00 and find the same product for $40.00 at another mail order pharmacy, we will provide you with a $12.50 discount, bringing your total to $37.50.

To get the discount please make sure to mention the price match to the customer service team when they call to collect payment for your order. Or call toll free at 1-888-904-8467 to place the order through the phone.

Terms & Conditions of Program

  • Guaranteed lowest price is only valid at the time of sale.
  • We will only match the current advertised price.
  • Products must be identical and in stock at the time of placing an order with a licensed mail order pharmacy. They must be an online Canadian pharmacy with an address in Canada.
  • Products must be authentic in brand and size (same manufacturer, same country of manufacture, same pack size, same strength and same quantity).
  • Products must be new. We cannot match the price of any used, short expiry or expired product.
  • Price match can only be issued over the phone with our customer service team. Please note at this time we cannot offer price matching for the products Ozempic or Saxenda.
What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


VETSULIN (porcine insulin zinc suspension) is a medication that treats high blood sugar in dogs or cats with diabetes mellitus.

VETSULIN insulin is available as vials or an injectable pen called VetPen.

VETSULIN is for dogs and cats with diabetes mellitus.


The dosage will be determined by the veterinarian.

Inject VETSULIN under the skin as often as directed by the veterinarian.

Before administration, gently shake the vial until a uniformly milky suspension is obtained. If there is foam on the medication's surface, wait for the foam to dissipate before drawing up the drug.

Do not use it if there are visible particles after resuspending the mixture.


The active ingredient in VETSULIN is purified porcine insulin (40 units per milliliter), 35% amorphous, and 65% crystalline.

Inactive ingredients include methylparaben, sodium acetate trihydrate, sodium chloride, zinc, and hydrochloric acid and sodium hydroxide for pH adjustments.


No drug interactions have been reported with VETSULIN.


Closely monitor your dog or cat for symptoms of hyper- and hypoglycemia. Overdosage can result in harm and death.

After opening, the vial can be used for up to 42 days.

Side Effects

The following side effects were observed for dogs, and may be due to the drug or the diabetic state:

  • Cataracts
  • Diarrhea
  • Hematuria
  • Hypoglycemia
  • Injection site reactions
  • Pancreatitis
  • Urinary tract infections
  • Vomiting

The following side effects were observed for cats, and may be due to the drug or the diabetic state:

  • Changes in appetite
  • Dehydration
  • Diarrhea
  • Hypoglycemia
  • Injection site reactions
  • Lethargy
  • Ocular discharge/color change
  • Polyneuropathy
  • Urinary tract disorder
  • Vomiting
  • Weight loss


Vetsulin [package insert] Summit, NJ: Merck; 2012.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

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